0
Willem Blaeu was born in 1571.
Willem Blaeu died on 1638-10-21.
Willem Jansz / Janszoon was born around the year 1570. He should not be condused with Dutch cartographer Willem Jansz Blaeu who was born in 1571.
Joan Blaeu was born in 1596.
Joan Blaeu died in 1673.