Jean I de Grailly (died c. 1301) was the seneschal of the Duchy of Gascony from 1266 to 1268, of the Kingdom of Jerusalem from about 1272 until about 1276, and of Gascony again from 1278 until 1286 or 1287.
Read more about Jean I De Grailly: Early Life, Ninth Crusade, Europe, Last Campaigns in The Levant