:

P. Fedele,   "S. Maria in Monasterio (Note e documenti),"  Archivio del R. societa romana di storia patria 29 (1906), iv., p. 221:

Cum per Urbanum VI imposita fuerit et sit collecta ecclesiis et monasteriis Urbis usque ad quantitatem centum millium florenorum auri pro subsidio et defensione fidei christiane contra scysmaticos et infideles ac hostes et rebelles dicte fidei, et ecclesie Sancte Marie in Monasterio de Urbe imposita sit collecta usque ad quantitatem ducentorum florenorum auri, ut patet in catasto dicte imposite penes cardinalem commissarium, et ipsa ecclesia non habeat aliquid mobile ut possit dictam impositionem solvere nec aliquid de stabilibus quod minus dampnosum dicte ecclesie sit, canonici ecclesie S. Marie in Monasterio, domnus Nicolaus Talgentis, domnus Laurentius Iohannis presbiteri, domnus Paulus Fuscarelli, domnus Petrus de Surdis et domnus Iacobus Pauli Stephanelli de Thedallinis, pro se et pro Andrea Novello canonico dicte ecclesie, absente ab Urbe, habita licentia a domno Poncello de Ursis tit. Sancti Clementis presbiteri cardinalis, vendunt nobili viro Petro Matheo quondam Iacobucii Iudicis Angeli de Urbe, de regione Campitelli, unam pedicam terrarum sementariciarum de .X. rublis extra portam Apiam inter hos fines:  ab uno latere est tenimentum casalis Centumcellarum, ab alio est casale quod dicitur de Rubeis, quod nunc tenet Petrus Serragona; ab aliis duobus hateribus est casale ipsius emptoris, pro pretio ducentorum quinquaginta florenorum boni et puri auri.

Testes: Georgius Malgionis notarius, Andreas Cole Carbonis notarius de regione Transtiberim, et Antonius Cole Marcherie (?) notarius de regione Campitelli.

 

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In order to carry on his war against the Cardinals who refused to acknowledge him as legitimate pope,  Urban VI imposed an assessment on the churches and monasteries of the City of Rome in the amount of  100,000 gold florins.  S. Maria in Monsterio was ordered to pay 200 gold florins, though they had no mobile goods at all and no property belonging to the church of less value than the property being sold.  They had the permission of Cardinal Poncello Orsini, Cardinal Priest of San Clemente (September 18, 1378—February 2, 1395).

The curt reference to Urban VI might indicate not only the unhapiness of the Canons at the forced subsidy, but also their opinion as to the validity of his claims: he is not referred to as D(ominus) N(oster).