Cornelis de Graeff (Dutch noble, born 1650)

[1] He was a member of the family De Graeff and was the only survived son of Andries de Graeff and his nice Elisabeth Bicker van Swieten (1623-1656), daughter of burgomaster Cornelis Bicker (van Swieten) and Aertge Witsen, both patents from powerful patrician families of Amsterdam.

[2] Dutch Grand Pensionary Johan de Witt was a cousin of him, burgomasters Cornelis Geelvinck and Lambert Reynst his uncles.

His brother-in-law Jean Jan Deutz, Vrijheer van Assendelft was married to Maria Boreel,[3] member of an outstanding family.

His father Andries said that they descent from the Austrian noble family Von Graben,[5] which was an apparent (or illegitimate) branch of the House of Meinhardin.

His sister Alida de Graeff, Vrijvrouwe of the high Lordship Jaarsveld, appeared as heir to the childless Cornelis.