John, Old Lord of Beirut

John of Ibelin (c. 1179 – 1236),^[1] called the Old Lord of Beirut, was a powerful crusader noble in the 13th century, one of the best known representatives of the influential Ibelin family. The son of Balian of Ibelin and the dowager queen Maria Comnena, he had close ties with the nobility of both Cyprus and Jerusalem, since he was the half-brother of Queen Isabella I of Jerusalem. Before he was 20, he was appointed constable of Jerusalem, and a few years later became Lord of Beirut. John rebuilt Beirut after Saladin's conquest, and established the grand Ibelin family palace. He served as regent of Jerusalem on behalf of his niece Maria of Montferrat from 1205 to 1210 after her mother, Queen Isabella, died. He was also regent for Isabella's grandson Henry I of Cyprus from 1228 until Henry came of age in 1232. John was known as a principled man, and was seen as the natural leader of the Christian barons in the Holy Land. He resisted the power-seeking of Frederick II, Holy Roman Emperor, in Cyprus, and opposed the imperial forces until King Henry came of age.