Conrad of Montferrat becomes King of Jerusalem upon his marriage to Isabella I of Jerusalem.

Conrad of Montferrat was a nobleman, one of the major participants in the Third Crusade. He was the de facto King of Jerusalem by virtue of his marriage to Isabella I of Jerusalem from 24 November 1190, but officially elected only in 1192, days before his death. He was also the eighth Marquess of Montferrat from 1191.

The king or queen of Jerusalem was the supreme ruler of the Kingdom of Jerusalem, a Crusader state founded in Jerusalem by the Latin Catholic leaders of the First Crusade, when the city was conquered in 1099. Most of them were men, but there were also five queens regnant of Jerusalem, either reigning alone suo jure, or as co-rulers of husbands who reigned as kings of Jerusalem jure uxoris.

Isabella I was the queen of Jerusalem from 1190 to her death in 1205. She was the daughter of King Amalric of Jerusalem and his second wife, the Byzantine princess Maria Comnena. Isabella was a younger half-sister of King Baldwin IV and Queen Sibylla of Jerusalem. Her half-brother married her to Humphrey IV of Toron. Isabella and Humphrey's respective stepfathers, Balian of Ibelin and Raynald of Châtillon, were influential members of the two baronial parties. The couple's marriage 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.

November 24 is the 328th day of the year in the Gregorian calendar; 37 days remain until the end of the year.