Bernard IV of Astarac

Bernard IV (died c. 1291) was Count of Astarac from 1249, when his brother Centule II died without children. A younger son of Centule I and Séguine d'Armagnac, he founded three Gascon bastides, the most important being Mirande in 1281, which became the county's capital at the end of the century.

He also founded Seissan in 1266 and Masseube in 1274. He had four sons, among them Centule III, who succeeded him, and Arnaud.