birthhigh confidence
1802-01-01
1 linked sourceBorn 1802-01-01 · Died 1857-01-01
Johann Heinrich Märtens/Maertens was born (1802-01-01). Source: Wikidata referenced P569 statement
Johann Heinrich Märtens/Maertens died (1857-01-01). Source: Wikidata referenced P570 statement
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1802-01-01
1 linked source1857-01-01
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Accepted in the user-authorized Wikidata CC0 bulk publication run.
Q126933825$1D24BF28-87C7-4B91-A748-C4DA8C3B4044; 3 source anchors · Wikidata · P569
Open original sourceQ126933825$EDDE8906-CC0D-40AC-BFA6-573C54EC2C74; 3 source anchors · Wikidata · P570
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