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Burke's Peerage writes: William FitzAlan; feudal Baron of Oswestry, Sheriff Salo...
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Burke's Peerage writes: William FitzAlan; feudal Baron of Oswestry, Sheriff Salop and Castellan of Shrewsbury 1138; besieged there as an adherent of the Empress Maud by King Stephen; restored to his lands by Henry II 1155 and set about recovering the Barony of Oswestry, by now in Welsh hands; founder of Haughmond Abbey; m. 1st Christian, possibly a niece of Robert FitzRoy, 1st Earl of Goucester ofthe 1122 cr., illegitimate son of Henry I, and had a daughter (Christian, m Hugh Pantulf); m 2nd Isabel....daughter and heir of Ingram de Say, feudal Lord of Clun, Salop and d. 1160.