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Keats-Rohan, K. S. B. Domesday Descendants: A Prosopography of Persons Occurring...
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Keats-Rohan, K. S. B. Domesday Descendants: A Prosopography of Persons Occurring in English Documents 1066-1166. II. Pipe Rolls to Cartae Baronum. Woodbridge, Suffolk: Boydell Press, 2002. Entry for "de Gloecestria, Roger". pp. 480-481 .