Roberto Malatesta  Roberto Malatesta (c. 1441/42 – 10 September 1482) was an Italian condottiero, or mercenary captain, lord of Rimini, and a member of the House of Malatesta. Born at Fano, Roberto was an illegitimate son of Sigismondo Pandolfo and his lover Vannetta dei Toschi di Fano, but had been legitimated to the succession by Pope Nicholas V in 1450. Malatesta debuted as papal diplomat in southern Italy (1457) to sign a treaty of peace with Alfonso V of Aragon. As a condottiero, in 1460 he fought for his father against Ancona in the war for Jesi. In 1461-1463 he fought against Pope Pius II's troops in the Marche, led by Federico III da Montefeltro; in 1461 Sigismondo Pandolfo and Roberto were victorious at the battle of Castelleone di Suasa. After several reverses of fortune, with some other victories by Roberto, the war ended with the loss of Fano for the Malatestas of Rimini in 1463. During Sigismondo's period as Venetian commander in Morea, Roberto fought for Francesco Sforza of Milan. At the death of his uncle, Malatesta Novello (1465), he captured Cesena. Soon Federico da Montefeltro besieged it and Roberto was forced to abandon it, in exchange of a small fiefdom nearby for himself. Once back to Rimini, in 1466, Sigismondo Pandolfo named his other son Sallustio Malatesta as heir of Rimini. In 1468, after his father's death, he was sent to capture Rimini, which was held by Sigismondo's lover and later third wife Isotta degli Atti in the behalf of Sallustio, who was designated by his father as his heir. According to the tradition, he entered the "Rocca" ("Citadel") of the city disguised as a peasant, and took the city in the name of the Pope, but soon started to act independently. On 30 August 1469, thanks to the support of Federico da Montefeltro, he decisively defeated the Papal troops sent to oust him. In the following years, he is said to have poisoned both his stepmother, Isotta, and his half-brothers, Sallustio (whom he had initially associated in the government of Rimini) and Valerio.