Who married Constance de Normandie?

Constance de Normandie (1061/65- 1090), est une fille de Guillaume le Conquérant († 1087), duc de Normandie puis roi d'Angleterre, et de Mathilde de Flandre († 1083).

Alan IV (c. 1063 – 13 October 1119) was Duke of Brittany from 1072 until his abdication in 1112. He was also Count of Nantes (from c. 1103) and Count of Rennes. His parents were Duchess Hawise and Duke Hoel II. He is also known as Alan Fergant. Through his father, he was of the Breton House of Cornouaille dynasty (Breton: Kerne dynasty). He was the last Breton-speaking Duke of Brittany.