Theodore was widowed in the same year and proceeded to marriages with Philippa of Armenia and Marie de Courtenay.

As a younger daughter, the marriage of Maria was not intended to add a potential husband in the line of succession to the throne.

In 1218, Maria was married to prince Béla of Hungary,[1] and became Roman Catholic, converting from Greek Orthodoxy, her religion by birth.

The crown prince succeeded him as King Béla IV of Hungary and Maria became queen consort.

During the Mongol Invasion of Hungary, Maria and her children were sent by Béla to the Fortress of Klis, Split, along with many other Hungarian noblewomen who had been widowed by the Tatars.