Osbern fitzRichard
... that Osbern fitzRichard is considered an English feudal baron because he held Richard's Castle as tenant-in-chief in 1086?
... that <b id="mwBPc"><a href="./Osbern_fitzRichard" id="mwBPg" rel="mw:WikiLink" title="Osbern fitzRichard">Osbern fitzRichard</a></b> is considered an <a href="./English_feudal_barony" id="mwBPk" rel="mw:WikiLink" title="English feudal barony">English feudal baron</a> because he held <a href="./Richard's_Castle" id="mwBPo" rel="mw:WikiLink" title="Richard's Castle">Richard's Castle</a> as tenant-in-chief in 1086?