Question: Who is Maria Of Antioch (Pretender)'s paternal grandfather?
Sentence (from "Bohemond IV of Antioch"): Bohemond made an alliance with Az-Zahir Ghazi, the Ayyubid emir of Aleppo, and Kaykaus I, the Seljuq sultan of Rum, who often invaded Cilicia during the following years, to prevent Leo I from attacking Antioch.
Relevant evidence: No