William was born about 1652, the son of Pietro Caesar Albertus and Judith Janse Meynje. The place is not known.
William Albertus (c1652-?)
Pietro Caesar Albertus (1608-c1655)
Andrea Alberti (c1579-?)
Veronica Medici (c1583-?)
Judith Janse Meynje (c1622-c1655)