The last design they were at work upon represented the Moulin joli, the house of Marguerite, with the device Cur valle permutem Sabina divitias operosiores?
These last years of his life were spent in journeying backwards and forwards between Toulouse and Rome, where his abode was at the basilica of Santa Sabina on the Aventine, given to him by the pope; and then in extended journeys all over Italy, and to Paris, and into Spain, establishing friaries and organizing the order wherever he went.
Trajan, who had been set against Hadrian by reports of his extravagance, soon took him into favour again, chiefly owing to the goodwill of the empress Plotina, who brought about the marriage of Hadrian with (Vibia) Sabina, Trajan's great-niece.
Previously the several districts formally recognized were Latium, the Marittima (or sea-board) and Campagna, the patrimony of Saint Peter, the duchy of Castro, the Orvietano, the Sabina, Umbria, the Perugino, the March of Ancona, Romagna, the Bolognese, the Ferrarese, and the duchies of Benevento and of Pontecorvo.
He published in 1803 a learned work, Sabina, oder Morgenszenen im Putzzimmer einer reichen Romerin, a description of a wealthy Roman lady's toilette, and a work on ancient art, Griechische Vasengemalde.