Alberghetto II Chiavelli

Alberghetto II Chiavelli (c. 1295–c. 1376) was a Ghibelline condottiero and lord of Fabriano in the Marche, son of Tommaso I. In 1317 he returned from exile by night with three hundred knights and began the city's second circuit of walls, finished in 1330.

He founded a hospital outside the walls in 1321 and set up his signoria the next year, but his grip slipped and in 1338 he was expelled. In 1344 he retook Fabriano with the help of Nolfo da Montefeltro, exiling his opponents and confiscating their property.

In 1351 he rebuilt the Sturinalto fountain and had a new town bell cast with his arms. Jailed by the pope in 1363 for plotting for Giovanni Visconti, he was released and died among his family at Genga castle around 1376.