Wikidata:Database reports/identical birth and death dates/1

These are pairs of items with identical dates in date of birth (P569) and date of death (P570). Some should be merged (duplicates), others not: different persons with the same dates (coincidence or virtual twins) or incorrect dates (mixup).

The list is updated regularly (daily?) by bot (items with corrected or removed dates can take a few days to be removed from the list).

• A formatted version is at selection (1)
• Different people with identical dates are listed at false positives. A list of "virtual twins" was developed from that.
• For a status, see Wikidata talk:Database reports/identical birth and death dates

How probable are false positives?

• (A) Items for people with both dates: 3,057,268 ^ref
• (B) Items for people with two people with the same date of birth and date of death (Q20978290): 3,275 ^ref
• Ratio (B/A): 1.07 ‰
• (C) There are 310,044 ^ref redirects to items with both dates, i.e. two items were merged
• Ratio (C/A): 10.14 %
• False positives (B/C): 1.06 % (This underestimates it as it assumes that all items had both dates before being merged).

Items in the list below could be:

Type	Sample	Suggested approach
Items about the same person	John Casimir, Count of Erbach-Breuberg (Q19902526) sitelink to enwiki Johan Casimir van Erbach (Q3917172) sitelink to nlwiki	merge the two items
Items about the same person	Henri Verdun (Q3132140) sitelink to frwiki Maurice Castellain (Q5604715) sitelink to svwiki	merge the two items
Items about the same person	Charles Henry of Nassau-Siegen (Q64055) sitelink to enwiki redirect Charles Henry of Nassau-Siegen (Q16858083) sitelink to enwiki article	delete the redirect-sitelink and merge the two items. Special:MergeItems can sometimes merge them directly.
Items about the same person	Karl Gottlieb von Windisch (Q927307) items with sitelinks Karl Gottlieb von Windisch (Q1465093) sitelink manually moved, but item not redirect	merge the two items
Items about the same person	Peter Lamberg (Q5932605) sitelink to svwiki (disambiguation page) Peter Lamberg (Q19976026) sitelink to svwiki article	delete the sitelink to the disambiguation page and merge the two items (sitelink didn't get updated on pagemove) find a new item for the disambiguation page or create it
Items about likely about the same person, but this isn't conclusive	Paul Hofmann (Q90030) and Paul Gutike (Q55681910) Eyre Turquand (Q65807514) and Ellen Eyre Turquand (Q72890320)	add said to be the same as (P460) to each, do not merge them
Items about different people, with incorrect dates and possibly mixed-up sitelinks	Yrjö Saarinen (Q11903052) and Yrjö R. Saarinen (Q11903045) Aleksander Thomson (Q3742060) and Aleksander Thomson (Q16406815)	correct dates and/or fix sitelinks. Don't merge. If in doubt, use the articles' talk pages or WD:IWC
Items about a person and items with dates they shouldn't have	Sigmund Freud (Q9215) biography of Sigmund Freud (Q2904119)	remove dates from the item that shouldn't have them
Items for identical persons, but with two articles at the same Wikipedia	Olavi Merinen (Q11885292) with article at fiwiki Olavi Merinen (Q17382548) with another article at fiwiki	possibly suggest to Wikipedia to merge both adding Template:Merge (Q6919004) to each article mark one with instance of (P31): Wikimedia duplicated page (Q17362920) and qualifier of (P642) linking to the other item Alternatively, interlink both with said to be the same as (P460) possibly move statements to the one item that isn't marked with Wikimedia duplicated page (Q17362920) Once the merge of the articles completed, the items can be merged
False positives: two different persons, with same dates of birth and death	Étienne Bernand (Q7121177) and André Bernand (Q19953021) Harry Elkins Widener (Q511212) and Juozas Montvila (Q4301999) Robun Kanagaki (Q1723541) and James MacGregor (Q6138639)	double-check dates, ideally with references interlink both items with different from (P1889) and qualify with criterion used (P1013) = two people with the same date of birth and date of death (Q20978290) add items to False_positives
Already merged/fixed	some of the below (items redirected, labels and statements appear then as identical)	do nothing ;)

Steps:

• Are both items about the same person?
  • If yes:
    • Can the items be merged?
      • If yes: merge them. In the next update, the pair will disappear from the list
      • If no: tag the two articles at Wikipedia for merging. In the next update, the pair will be moved to the "marked for merging" section of the main list.
  • If no:
    • Are the instance of (P31) values correct?
      • If no: correct them
    • Should the item have date of birth (P569)/date of death (P570)?
      • If no: remove them. In one of the next updates, the pair will disappear from the list.
    • Are the dates correct?
      • If no: correct them. In one of the next updates, the pair will disappear from the list.
      • If yes: add the pair to "false positives". In the next update, the pair will disappear from the list.

Update frequency:

• Removal of merged items: generally daily
• Removal of items marked as different: generally daily
• Removal of items with corrected dates: generally weekly (based on Wikidata dumps)
• Merge of items identified as duplicates and marked for merging at a Wikipedia (if they still include identical dates): occasionally by bot once the merger at Wikipedia is completed.
• Addition of newly identified items: generally weekly (based on Wikidata dumps)

Tools:

• Note Markasduplicate

DOB	DOD	Merged	Person 1	Person 2	P31 (#1)	P31 (#2)	P21 (#1)	P21 (#2)	P27 (#1)	P27 (#2)	P106 (#1)	P106 (#2)	Diff from	TO DO
12 November 1865 23 April 1896	11 May 1936 17 December 1964		Nōsho Benjirō	Fumiko Nōsho	human	human	male	female	Japan		composer	singer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
7 October 1853 4 November 1868	30 May 1917 20 March 1939		František Jaroslav Rypáček	Karel Ryska	human	human	male	male	Austria-Hungary		pedagogue, writer, poet, teacher, historian, literary historian, local historian, high school teacher, editing staff	technician	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
28 March 1887	17 November 1940 17 November 1940		Jamaluddin	Muhammad Kasyful Anwar	human	human	male	male	Indonesia	Indonesia	'ālim	'ālim	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
20 July 1893 20 July 1893	13 October 1955 13 October 1955		Eusebio Fernández Muñiz	Facundo Pascual Quilis	human	human	male	male	Spain		businessperson, sports executive		-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
15 March 1900 2 October 1938	10 November 1974 7 May 2018		Wolfgang Schadewaldt	Oleksandr Vozianov	human	human	male	male	Germany	Soviet Union, Ukraine	hellenist, classical philologist, translator, university teacher	university teacher, urologist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
30 June 1911 22 January 1939	14 August 2004		Czesław Miłosz	Stanisław Kwiatkowski	human	human	male	male	Poland, United States of America, Lithuania	Poland	poet, diplomat, writer, essayist, translator, pedagogue, university teacher, literary historian	sociologist, political scientist, soldier	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
30 June 1911 1929	14 August 2004 20 January 2022		Czesław Miłosz	Jerzy Waglewski	human	human	male	male	Poland, United States of America, Lithuania		poet, diplomat, writer, essayist, translator, pedagogue, university teacher, literary historian		-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
30 June 1911 1952	14 August 2004		Czesław Miłosz	Krystyna Duniec	human	human	male	female	Poland, United States of America, Lithuania	Poland	poet, diplomat, writer, essayist, translator, pedagogue, university teacher, literary historian	theatrologist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
22 January 1939 1929	20 January 2022		Stanisław Kwiatkowski	Jerzy Waglewski	human	human	male	male	Poland		sociologist, political scientist, soldier		-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
22 January 1939 1952			Stanisław Kwiatkowski	Krystyna Duniec	human	human	male	female	Poland	Poland	sociologist, political scientist, soldier	theatrologist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1929 1952	20 January 2022		Jerzy Waglewski	Krystyna Duniec	human	human	male	female		Poland		theatrologist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
22 August 1921 22 August 1921	18 July 2006 18 July 2006		Gabriel Mario Ogando	James Menter	human	human	male	male	Argentina		association football player	physicist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
28 January 1922 28 January 1922	17 October 1996 17 October 1996		Oscar Badrig Westendorff	Orlando Moscoso	human	human	male	male	Brazil	Brazil	politician	businessperson, politician	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
19 December 1931 19 December 1931	22 June 2016 22 June 2016		William Patrick	Joan McIntyre	human	human	male	female	Canada		competitive diver	writer, activist, anthropologist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
14 May 1952, 16 May 1952 16 May 1952	1 January 2020 1 January 2020		Shinji Katsura	Katsura Shinnosuke	human	human	male	male	Japan	Japan	rakugoka	rakugoka	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
14 November 1757 14 November 1757	7 March 1799 7 March 1799		Johannes Sunnen	Johann Thommes	human	human	male	male				farmer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
2 February 1773 2 February 1773	26 February 1799 26 February 1799		Michael Tackes	Johann Theis	human	human	male	male			farmer	farmer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
3 January 1815 3 January 1815	10 May 1888, 10 May 1885 10 May 1885		Tomáš Vorbes	Tomáš Vydras	human	human	male	male			pedagogue, historian, school inspector, teacher	pedagogue, writer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
5 December 1825 5 December 1825	1 July 1884 1 July 1884		María Concepción Saralegui Lorente	María Concepción Saralegui Lorente	human	human	female	female	Spain		writer	writer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
19 November 1831 19 November 1831	19 September 1881 19 September 1881		James A. Garfield	Aboud bin Lādin	human	human	male	male	United States of America		politician, military officer, lawyer, statesperson, writer		-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
5 September 1835 5 September 1835	31 May 1905 31 May 1905		no label	Karapet Ezovi	human	human	male	male	Russian Empire	Russian Empire	philologist, historian	philologist, historian	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
11 July 1838 11 July 1838	31 July 1902 31 August 1902, 31 July 1902		Gaetano Negri	Antonín Pinkava	human	human	male	male	Kingdom of Italy		politician, geologist, translator, military personnel, official, historian, essayist, literary critic, mayor	teacher, choir director, head teacher, opinion journalist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
2 February 1879 2 April 1879, 2 February 1879	7 February 1958 7 February 1958		Hjalmar Davidsen	Tomáš Koutný	human	human	male	male	Kingdom of Denmark	Czechoslovakia	film director, film producer	politician, journalist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
12 October 1879, 10 December 1879, 17 September 1879 10 December 1879	6 December 1959, 26 December 1959 26 December 1959		Gottlieb Schuller	Harriet Miller Greenway	human	human	male	female	Austria		glass painter, mosaicist		-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
13 March 1890 13 March 1890	14 September 1951 14 September 1951		Fritz Busch	Hans Busch	human	human	male	male	Germany		conductor, pianist, music director	director	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
18 September 1890 18 September 1890	24 June 1958 24 June 1958		Julian Stemporowski	Stepan Soroka	human	human	male	male			farmer	farmer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1 January 1893	1 January 1960		Frankie Fleming	Stylianos Papadopoulos	human	human	male	male		Greece	boxer		-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1893	1960		Anna Boska	Stylianos Papadopoulos	human	human	female	male	Poland	Greece			-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
5 June 1894, 8 June 1894 8 June 1894	12 August 1942 12 August 1942		Rudolf Agular	Charles Henry Fernald	human	human	male	male		United States of America	resistance fighter	business scholar, university teacher	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
9 July 1895 9 July 1895	29 September 1915 29 September 1915		André Imhaus	Émile Georges François Imhaus	human	human	male	male	France	France			-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1899 1 January 1899	1967 1 January 1967		Zofia Majewska	Volf Motylev	human	human	female	male	Poland	Soviet Union, Russian Empire	farmer	economist, university teacher	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1899 1 January 1899	1967 1 January 1967		Antanas Budzinskas	Volf Motylev	human	human	male	male	Lithuania	Soviet Union, Russian Empire		economist, university teacher	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
22 May 1904 22 May 1904	25 February 1999 25 February 1999		Walter William Wilcox	Walter William Wilcox	human	human	male	male		United States of America			- Walter Francis Willcox	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
30 June 1911 30 June 1911	14 August 2004 14 August 2004		Czesław Miłosz	Jerzy Mizgalski	human	human	male	male	Poland, United States of America, Lithuania	Poland	poet, diplomat, writer, essayist, translator, pedagogue, university teacher, literary historian	political scientist, lecturer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
30 June 1911 30 June 1911	14 August 2004 14 August 2004		Czesław Miłosz	Jacek Kiełpiński	human	human	male	male	Poland, United States of America, Lithuania		poet, diplomat, writer, essayist, translator, pedagogue, university teacher, literary historian	journalist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
22 January 1939 30 June 1911	14 August 2004		Stanisław Kwiatkowski	Jerzy Mizgalski	human	human	male	male	Poland	Poland	sociologist, political scientist, soldier	political scientist, lecturer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
22 January 1939 30 June 1911	14 August 2004		Stanisław Kwiatkowski	Jacek Kiełpiński	human	human	male	male	Poland		sociologist, political scientist, soldier	journalist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1929 30 June 1911	20 January 2022 14 August 2004		Jerzy Waglewski	Jerzy Mizgalski	human	human	male	male		Poland		political scientist, lecturer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1929 30 June 1911	20 January 2022 14 August 2004		Jerzy Waglewski	Jacek Kiełpiński	human	human	male	male				journalist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1952 30 June 1911	14 August 2004		Krystyna Duniec	Jerzy Mizgalski	human	human	female	male	Poland	Poland	theatrologist	political scientist, lecturer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
1952 30 June 1911	14 August 2004		Krystyna Duniec	Jacek Kiełpiński	human	human	female	male	Poland		theatrologist	journalist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
30 June 1911 30 June 1911	14 August 2004 14 August 2004		Jerzy Mizgalski	Jacek Kiełpiński	human	human	male	male	Poland		political scientist, lecturer	journalist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
6 April 1915 6 April 1915	21 January 2009 21 January 2009		Edward Cecil O'Brien	Hellmut Baumann	human	human	male	male				merchant	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
3 March 1916 3 March 1916	20 September 2011 20 September 2011		Jean Roy	Jean Pierre Roy	human	human	male	male	France	France	musicologist, music critic, biographer, radio producer	official	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
15 July 1925 15 July 1925	19 April 1977 19 April 1977		Douglas Vaughan	Brian Vaughan	human	human	male	male	United Kingdom		rugby union player	rugby union player	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
10 October 1928, 1 October 1928 1 October 1928	28 September 2015 28 September 2015		Abdel Tawab Jusef	Virgil Hays	human	human	male	male	Egypt		writer, children's writer, novelist, translator	animal scientist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
13 June 1933 13 June 1933	14 April 2024 14 April 2024		Thomas B. Widdowson	Thomas B. Widdowson	human	human	male	male	Canada	Canada	botanist, phycologist	botanist, phycologist	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
30 April 1934 30 April 1934	7 September 2024 7 September 2024		Helmi Eltouni	Herbert Fritsche	human	human	male	male	Kingdom of Egypt, Republic of Egypt, United Arab Republic, Egypt	Germany	graphic artist, painter	non-fiction writer	-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2
18 March 1939 18 March 1939	11 January 2023 11 January 2023		Piers Haggard	Timothy Rowland Morley	human	human	male	male	United Kingdom	United Kingdom	film director, television director, screenwriter		-	•correct dates •merge •markasduplicate •markdifferent •MxM1 MxM2