Relationship Chart:
Erich Wilhelm Sebastian Ritter and Hetty Mittweg
Mother
Brother
Otto Mittweg
Birth 24 October 1857 4933 -- Köln
Death 24 September 1913 (Age 55) -- Bonn-Bad Godesberg
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Daughter
Hetty Mittweg
Birth 12 March 1887 2922 -- Rindern bei Cleve
Death 20 June 1977 (Age 90)
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Hetty Mittweg is the first cousin of Erich Wilhelm Sebastian Ritter.