(1) He is married to Christina van Bockxmeer.
They got married on January 28, 1863 at Amsterdam , he was 24 years old.Source 3
(2) He is married to Elisabeth Charlotte ten Siethoff.
They got married on July 3, 1867 at Amsterdam , he was 29 years old.Source 4
(3) He is married to Elisabeth Staal.
They got married on August 28, 1879 at Nieuwer-Amstel, he was 41 years old.Source 5
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Vader Wilhelmus Thomaszoon de Graaff [~ca1808 Haarlem]
Moeder Jansje Serné [~ca1811 Haarlem]
gehuwd dd. 27-5-1835 te Haarlem, akte 77
Grootvader Thomas de Graaf
Grootmoeder Catharina ter Poorten
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