His name may have styled "de la Bruer". He is called Geoffrey Plantagenet, Count of Anjou, Duke of Normandy, in Plantagenet Ancestry, by Richardson, page xxviii, genealogical table: Early Plantagenet Kings of England.
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Book:Monarchs, Rulers, Dynasties and Kingdoms of the World, by R. F. Russell, 1983, Facts on File, Inc.,; Pages 203-204, #24 France, c) Counts and Dukes of Anjou c. 870-1480.; Personal family library of Lisa L Hale.;