Willem was born in 1475. Willem's father was Aelbert Henricxs and his mother is <Unknown>. His paternal grandfather was Henric Aelbertsz and his paternal grandmother is <Unknown>. He was an only child. Willem is no longer alive.
General Notes
http://www.genealogieonline.nl/stamboom-heystek/I16554.php Beroep: nabuur te Maurik 1543..