Aymar I of Poitiers

Aymar I of Poitiers (c. 1115–1163) was the first count of Valentinois from the Poitiers dynasty. Around 1135 he acquired the county through his marriage to Rixende, possibly the sister or natural daughter of Eustache, bishop of Valence.

In 1157 the Emperor Frederick Barbarossa granted temporal lordship over thirteen parishes to the bishop of Valence, Odon de Crussol, who then also claimed the comital title. Aymar's son William I succeeded him around 1160.