Johannes Wilhelmus de Graaff: Merkel Genealogy

UPDATED: 21 october 2026

1876 - Yes, date unknown

Generation: 1

Johannes Wilhelmus de Graaff was born on 10 Nov 1876 in Haarlem Municipality, Noord-Holland, Netherlands; and died.

Johannes married Cornelia Maria Kraan on 15 May 1901 in Haarlem Municipality, Noord-Holland, Netherlands. Cornelia (daughter of Harme Kraan and Cornelia Schuitemaker) was born about 1880 in Schagen; and died. [Group Sheet] [Family Chart]