GEOFFREY (23 Sep 1158-Paris 19 Aug 1186, bur Notre Dame Cathedral, Paris[407]). Robert of Torigny records the birth "1158 IX Kal Oct" of "filius Henrico regi Anglorum…Gaufredus"[408]. His birth is recorded by Matthew Paris[409]. He was proclaimed Duke of Brittany in 1169 by his father. Duke of Brittany, Earl of Richmond de iure uxoris shortly after 6 Sep 1181. The Chronicle of Alberic de Trois-Fontaines records the death "in civitate Paris XIV Kal Sep" of "Gaufridus dux Britannie comes Richemontis filius Henrici regis Anglie natu tertius"[410]. He was trodden to death by a horse during a tournament in Paris. m (Betrothed 1168, Jul 1181) as her first husband, CONSTANCE de Bretagne, daughter of CONAN IV Duke of Brittany & his wife Margaret of Scotland ([1161]-[Nantes] 3/4 Sep 1201, bur Villeneuve-les-Nantes, Abbaye de Notre-Dame). She is named by Matthew Paris, who also states her parentage when recording her betrothal[411]. The Chronicle of Alberic de Trois-Fontaines names "Constantiam comitis Conani filia" as wife of "Gaufridus dux Britannie comes Richemontis filius Henrici regis Anglie natu tertius", specifying that she married [thirdly] "Guido frater vicecomitem de Tuart"[412]. She succeeded her father in 1171 as CONSTANCE Dss of Brittany. Robert of Torigny records the marriage in 1182 of "Gaufredus dux Britanniæ filius regis Henrici" and "filiam Conani comitis Britanniæ"[413]. She married secondly (3 Feb 1188, repudiated 1198) Ranulf "de Blundeville" Earl of Chester. The Genealogia Comitum Richemundiæ records that "Constantia filia Conani" married secondly "Ranulphus Comes Cestriæ", stating that he divorced her because of her adultery and that the marriage was childless[414]. Living apart from her second husband, he captured her at Pontorson in 1196 and imprisoned her at his castle at Beuvron. She was liberated in Summer 1198, and repudiated her marriage. She married thirdly (Oct 1199) as his first wife, Guy de Thouars, who was chosen in 1203 as Guy Duke of Brittany. The Genealogia Comitum Richemundiæ records that "Constantia filia Conani" married thirdly "Guidoni de Thoarcio"[415]. The Annals of Burton record the death in 1201 of "Constantia mater Arthuri comitis Britanniæ"[416]. The Genealogia Comitum Richemundiæ records the death in 1201 of "Constantia filia Conani" and her burial "apud Begar"[417]. The Chronicon Britannicum records the death "III Non Sep" in 1201 of "Constantia Ducissa Britanniæ"[418]. Another Chronicon Britannicum records the death "pridie non Sep" in 1201 of "Constantia comitissa, Conani filia, mater Arturi"[419]. The Chronicon Ruyensis Cœnobii records the death in 1201 of "Constantia Comitissa apud Nannetum"[420]. She died in childbirth. Duke Geoffroy & his wife had three children