Hawise, Duchess of Brittany

Hawise of Rennes (Breton: Hawiz Breizh; French: Havoise de Bretagne) (c. 1024-1037 – 19 August 1072) was Duchess of Brittany from 1066 until her death.

Hawise was daughter and heiress of Alan III, Duke of Brittany, by his wife, Bertha of Blois,[1] and as such, a member of the House of Rennes.

She had two siblings: Conan II[2] and Emma of Brittany.

Hawise succeeded her older brother Conan, who was assassinated by poisoning on 11 December 1066.

[1] Hoel exercised authority jure uxoris and continued to control the government after her death in 1072 acting as regent for their son, Alan IV.