Question: Who is William Of Montferrat, Count Of Jaffa And Ascalon's father-in-law?
Sentence (from "William of Montferrat, Count of Jaffa and Ascalon"): He fell ill, probably from malaria, at Ascalon in April 1177, and died there in June, leaving Sibylla pregnant with the future king Baldwin V.
Relevant evidence: No