 As a result, Vizier Mehmet Saridže-pasha arrived in Smederevo in mid-1434 with a message from Edirne.It stated that Serbia's safety from the Ottoman Empire could only be guaranteed through the marriage of Branković's older daughter to Sultan Murad II.After much deliberation, the council convoked at the palace conceded, and arrangements were made for Mara to be engaged to the Sultan.