John de Avesnes Seigneur de Beaumont [12802] ²⁴

  General Notes:

http://www.hull.ac.uk/php/cssbct/cgi-bin/gedlkup.php/n=royal?royal04569

John married Agnes de Valence [12801] [MRIN: 5953], daughter of William de Valence Earl of Pembroke [4526] and Joan de Munchensy Countess of Pembroke [11959]. (Agnes de Valence [12801] died on 31 Dec 1310.)