"Maria Comnena was probably born in 1154 or 1155, the daughter of John Comnenos, Protovestiarius, the grandson of the Byzantine Emperor John II, and nephew of the ruling Emperor, Manuel I. As such she was a member of the Byzantine Imperial family, but not in direct line to the throne. At the time of her birth, Manuel I had already been Emperor of the Eastern Empire for over a dozen years.
Manuel I consistently pursued a policy of cooperation with the crusader states, which included joint military operations, and a series of marriage alliances. In 1158, one of Manuel's nieces, Theodora, was married to King Baldwin III of Jerusalem, and in 1161, Manuel himself took Maria of Antioch, sister of Bohemond III, Prince of Antioch, to wife. Finally, when Amalric I of Jerusalem decided to seek a second wife (the High Court had required him to set aside his first wife in order to be crowned king), he turned to the Byzantine Emperor. An Embassy was sent to Constantinople in 1165 to find a suitable candidate and negotiate the marriage contract.
King Amalric's emissaries spent the next two years in the Byzantine capital negotiating the marriage. From the surviving sources, it is impossible to know why the negotiations took so long, but Amalric's emissaries and the Byzantine Emperor clearly had plenty of time to consider various candidates. Maria was either the most suitable or the most pleasing from the point of view of Amalric's representatives…"
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