House of Grey
The founder of the House of Grey was Anchetil de Greye , a Norman and vassal of William FitzOsbern , 1st Earl of Hereford , one of the very few proven companions of William the Conqueror known to have fought at the Battle of Hastings in 1066 . 
<triplet> Battle of Hastings <subj> William FitzOsbern, 1st Earl of Hereford <obj> participant