John S. Wurts, MAGNA CHARTA; ; Philadelphia, Brookfield Pub. Co., part V, p. 1133. [has this person as JOHN DE SWINNERTON, twice Sheriff of Staffordshire.
Paul Bailey McBride, ANCESTORS OF, has this person as Roger de Swynnerton, Governor of Stafford, Constable of the Tower of London, married Margaret Haughton. His sources: PoyntzA, Wallop Family History, MRL, BulkeleyG, AR7, MCS4, RD500.
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