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Geoffrey(jĕf`rē), 1158–86, duke of Brittany (1171–86); fourth son of Henry IIHenry II,
1133–89, king of England (1154–89), son of Matilda, queen of England, and Geoffrey IV, count of Anjou. He was the founder of the Angevin, or Plantagenet, line in England and one of the ablest and most remarkable of the English kings.
..... Click the link for more information. of England. Betrothed (1166) to Constance, heiress of Brittany, he was recognized as heir to the duchy in 1169 and succeeded to it on the death of her father. He married Constance in 1181. With his brothers he rebelled (1173–74) against Henry II and was subsequently involved (1182–84) in territorial disputes with his brother Richard (later Richard IRichard I,
Richard Cœur de Lion
, or Richard Lion-Heart,
1157–99, king of England (1189–99); third son of Henry II and Eleanor of Aquitaine.
..... Click the link for more information. ). Geoffrey died in Paris while forming an alliance with Philip IIPhilip II
or Philip Augustus,
1165–1223, king of France (1180–1223), son of Louis VII. During his reign the royal domains were more than doubled, and the royal power was consolidated at the expense of the feudal lords.
..... Click the link for more information. of France against Henry II.