Guido I da Montefeltro
Guido I da Montefeltro (1223–1298), nicknamed the Old, was a Ghibelline military leader and count of Montefeltro, son of Montefeltrano II. In 1275 he led the Romagna Ghibellines to victory over the Guelphs and drove the Malatesta of Rimini from Cesena. As captain of Forlì he directed the city's defence against the papal siege of 1282–1283.
Forlì eventually fell and Guido accepted Pope Honorius IV's authority in 1286. Excommunicated in 1288, he captained Pisa's Ghibellines against Florence; reconciled in 1296, he joined the Franciscans and died at Ancona in 1298.