Jan I van Wassenaer Polanen was born circa 1285 to Philips van Duivenvoorde (?-bef1309) and Elisabeth van Vianen (-bef1337) and died 1342 of unspecified causes. He married Catharina van Brederode (c1297-1372) .
Children
Name | Birth | Death | Joined with |
Maria van Polanen (bef1323-) | Gerard van Heemstede (-1378) | ||
Jan II van Wassenaer Polanen (c1324-1378) | 1324 | 1378 | Oda van Horne (1318-1353) Machteld van Brabant (c1324-1366) |