The Dutch and American Gase and related families

The Family Tree of the American Gase, Moermond, Boes, Steigmeyer, Elchert, Nye and Yost families
The Family Tree of the Dutch Gase, Van Stein, Weder, Van der Fluit, Mortel and Moermond families
Family Group Sheets
(compiled by Ronald A. Gase. Please email me for corrections, additions, questions or if you have special personal requests)
Tree currently contains 154,002 individuals and 65,753 families.
(site updated Saturday, October 24th, 2025)
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Family Group Sheet

FATHER Lenert Jansz "Leendert" KEIJ (LOOIJESTEIJN)
	Birth	about 1550	Wassenaar, Zuid-Holland, Nederland
	Burial	25 September 1633	Wassenaar, Zuid-Holland, Nederland
	Father	Jan Willemsz KEIJ (LOOIJESTEIJN)
MOTHER Maritgen PHILIPS
	Birth	about 1555	Wassenaar, Zuid-Holland, Nederland
	Burial	17 April 1625	Wassenaar, Zuid-Holland, Nederland
CHILDREN
M	Willem Leendertsz KEIJ (LOOIJESTEIJN)
	Birth	about 1595
	Death	1657
	Burial	26 August 1657	Wassenaar, Zuid-Holland, Nederland
	Marriage	13 February 1628	Geertgen IJSBRANTS; Wassenaar, Zuid-Holland, Nederland