[1] FitzHerbert gained the title of Lord of the Honour of Brecknock and was made Governor of Pickering Castle, Yorkshire and the Sheriff of Yorkshire by King John of England.

FitzHerbert is listed as one of the Counsellors named in Magna Carta in 1215.

He inherited, through his mother, a third interest in the barony of Miles Fitz Walter of Gloucester in 1219.

FitzHerbert's castles of Blenlevenny and Castell Dinas were sacked by Prince Llywelyn ab Iorwerth and Richard Marshal, 3rd Earl of Pembroke in October 1233.

FitzHerbert married Alice, the daughter of Robert fitzRoger,[2] Lord of Warkworth and Clavering and Margaret de Chesney, they had the following issue: He married secondly, Isabel, the widow of Roger Mortimer of Wigmore, the daughter of Walchelin de Ferriers of Oakham.