The historian Nikephoros Gregoras erroneously calls her "Maria" in one passage.[1] In January 1346, to cement her father's alliance with the rising Ottoman emirate and to prevent the Ottomans from giving their aid to the Empress-regent Anna of Savoy during the ongoing civil war, she was betrothed to the Ottoman ruler, Orhan Gazi.[2] The marriage took place in the summer of the same year. Her parents and sisters escorted her to Selymbria, where Orhan's representatives, including grandees of his court and a cavalry regiment, arrived on a fleet of 30 ships. A ceremony was held at Selymbria, where Orhan's envoys received her and escorted her to the Ottoman lands in Bithynia, across the Marmara Sea, where the actual wedding took place.[3]