Maria of Montferrat (1192–1212) was the queen of Jerusalem from 1205 until her death. Her parents were Isabella I and her second husband, Conrad of Montferrat. Maria succeeded her mother under the regency of her half-uncle John of Ibelin. After him the kingdom was ruled on Maria's behalf by her husband, John of Brienne, whom she married in 1210. She died giving birth to her successor, Isabella II.
Coronation of Maria and John, 13th-century miniature
Isabella I was reigning Queen of Jerusalem from 1190 to her death in 1205. She was the daughter of Amalric I of Jerusalem and his second wife Maria Comnena, a Byzantine princess. Her half-brother, Baldwin IV of Jerusalem, engaged her to Humphrey IV of Toron. Her mother's second husband, Balian of Ibelin, and his stepfather, Raynald of Châtillon, were influential members of the two baronial parties. The marriage of Isabella and Humphrey was celebrated in Kerak Castle in autumn 1183. Saladin, the Ayyubid sultan of Egypt and Syria, laid siege to the fortress during the wedding, but Baldwin IV forced him to lift the siege.
Marriage of Isabella I (on the right) and Conrad of Montferrat
Marriage of Isabella and her first husband, Humphrey IV of Toron
