The Lateran Palace fell into the hands of the Emperor when Constantine I married his second wife Fausta, sister of Maxentius. Known by that time as the "Domus Faustae" or "House of Fausta," the Lateran Palace was eventually given to the Bishop of Rome by Constantine I. The actual date of the donation is unknown, but scholars speculate that it was during the pontificate of Pope Miltiades, in time to host a synod of bishops in 313 that was convened to challenge the Donatist schism, declaring Donatism to be heresy. The palace basilica was converted and extended, becoming the residence of Pope Saint Sylvester I, eventually becoming the Cathedral of Rome, the seat of the Popes as the Bishops of Rome.