In 1208, the imperial candidate Philip of Swabia died and Walern, his erstwhile supporter, turned to his opponent, Otto of Brunswick. In 1212, he accompanied his first cousin Henry I, Duke of Brabant, to Li*ge, then in a war with Guelders. Waleran's first wife, Cunigunda, a daughter of Frederick I, Duke of Lorraine, died in 1214 and in May he married Ermesinda of Luxembourg *, and became count there.
Waleran
Frederick I, Duke of Lorraine