Fakhr-ad-Din Yusuf

Fakhr al-Din ibn al-Shaykh was an Egyptian emir of the Ayyubid dynasty. He served as a diplomat for sultan al-Kamil from 1226 to 1228 in his negotiations with the Holy Roman Emperor Frederick II leading to the end of the Sixth Crusade. He later commanded forces during the Seventh Crusade, dying at the Battle of al-Mansura in 1250.