Knighted by King Louis IX of France, he accompanied the king on several campaigns, firstly in Poitou in 1242, where he fought at the Battle of Taillebourg.
Diberikan gelar Knight oleh Raja Louis IX dari Prancis, ia menemani raja di beberapa kampanye, pertama-tama di Poitou pada tahun 1242, di mana ia berjuang di Perang Taillebourg.