The emperor's half brothers presumably remained in their grand mansions at Toulouse, well out of sight. Nothing is known of them. In Rome, the bored and bedizened Empress Fausta received a complex of buildings on the Caelian hill, once the property of the Laterani. A substitute for wealth was force. More and more in the later Empire the state refined a system of obligatory duties which otherwise it would have had to pay for. The principle was applied quite typically by Constantine in Rome. The comparative abundance of evidence concerning the nobles of Rome makes them unique; but they especially deserve description because they seem to be unique in no other respect. Licinius governed from the Bosporus to the Alps, having lost Asia Minor to Maximin Daia in 311. Outwardly, all was calm. An alliance of that year continued to join Licinius and Constantine.