It is not quite certain when Pietro Vannucci (called from the name of his adopted town Perugino) was born, but the place of his birth he himself announces in his signature. Probably his birth took place in 1446 or 1447 at the little town of Castello della Pieve, now called Citta della Pieve, as it was raised to the dignity of a city in 1601 by Clement VIII. His signature preserves, in the words "Petrus de Castro Plebis," the older name of his birthplace."