Pjetër's grandfather, Pavlo, was possibly Gjin Bua Shpata's son, who settled in Morea after leaving Nafpaktos in the hands of the Venetians.

[2] Shortly after the fall of Constantinople and the death of the last Byzantine emperor, Constantine XI (r. 1449–1453), 30,000 Albanians led by Pjetër Bua rose in revolt against the two Despots of the Morea, Thomas and Demetrius II, due to the heavy tributes they had to pay.

After the revolt failed, the Ottoman sultan Mehmed II (r. 1444‒1446; 1451‒1481), surnamed the Conqueror, recognised Pjetër Bua as the spokesperson of the Albanian population of the Morea.

[3] For a period of time, Pjetër Bua ruled the areas of the Morea that hadn't been conquered by the Ottomans.

In the period between 1467 and 1489, Peter Bua, as a commander of the Albanian stradioti, became one of the most well-known figures of distinguished warriors in the Republic of Venice and beyond in Italian opinion.