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Male Isaac Van Valkenburg Click to view Isaac Van Valkenburg in the family tree

Isaac was born on October 18th, 1795.1   Isaac's father was Bartholomew Van Valkenburg.  His paternal grandfather was Thomas Van Valkenburg. He had three brothers and four sisters, named Thomas, Joachem, Barent, Rachel, Cornelia, Gertruy and Anje.  He was the youngest of the eight children.  Isaac is no longer alive.1 

1 2013.ftw
Further source/citation:
World Family Tree Vol. 2, Ed. 1 @ Tree #2013