Sibylla was the Countess of Jaffa and Ascalon from 1176 and Queen of Jerusalem from 1186 to 1190. She was the eldest daughter of King Amalric of Jerusalem and Lady Agnes de Courtenay, sister of King Baldwin IV and half-sister of Princess Isabella/Queen Isabella I of Jerusalem, mother of Baldwin Aleramici/Prince Baldwin/King Baldwin V of Jerusalem. Her grandmother Queen Melisende had provided an example of successful rule by a queen regnant earlier in the century.
