Alberghetto I Chiavelli
Alberghetto I Chiavelli was a leading member of the Ghibelline Chiavelli dynasty of Fabriano in the Marche, and son of Gualtiero di Ruggero Chiavelli, who is believed to have founded the Augustinian convent of Sant'Agostino in 1216 and was buried there in 1258.
Early in the fourteenth century Alberghetto brought that convent inside the city walls, and he funded the completion of the Benedictine church and convent of San Nicolò, rebuilt after the earthquake of 1266. He died around 1304, before his family became formal lords of Fabriano.