Gherardo Appiani was the lord of Piombino

Principality of Piombino

The Principality of Piombino was a state of Italy, which existed from 1399 to 1805, when Napoleon absorbed it into the Principality of Lucca and Piombino...

 from 1398 until his death.

He was born in Pisa

Pisa

Pisa is a city in Tuscany, Central Italy, on the right bank of the mouth of the River Arno on the Tyrrhenian Sea. It is the capital city of the Province of Pisa...

, the son of Iacopo I Appiani. He was lord of that city from 1398 until 1399, obtaining the lordship of Piombino

Piombino

Piombino is an Italian town and comune of circa 35,000 inhabitants in the province of Livorno . It lies on the border between the Ligurian Sea and the Tyrrhenian Sea, in front of Elba Island and at the northern side of Maremma.-Overview:...

 in 1398 in exchange of Pisa, sold to Gian Galeazzo Visconti

Gian Galeazzo Visconti

Gian Galeazzo Visconti , son of Galeazzo II Visconti and Bianca of Savoy, was the first Duke of Milan and ruled the late-medieval city just before the dawn of the Renaissance...

 for 200,000 florins. In 1396 he married Paola Colonna

Paola Colonna

Paola Colonna was the lady of Piombino from 1441 until 1445.She was born in Rome into one of the most powerful family of Rome. Her brother Giordano was shortly Prince of Salerno and Duke of Venosa, while her brother Oddo would become Pope Martin V. On June 18, 1396 she was married to Gherardo...

, daughter of Agapito Colonna

Colonna family

The Colonna family is an Italian noble family; it was powerful in medieval and Renaissance Rome, supplying one Pope and many other Church and political leaders...

, and sister of future Pope Martin V

Pope Martin V

Pope Martin V , born Odo Colonna, was Pope from 1417 to 1431. His election effectively ended the Western Schism .-Biography:...

.

He died in 1405, succeeded in Piombino by his son Iacopo

Iacopo II Appiani

Iacopo II Appiani was the lord of Piombino from 1405 until 1441.He was born in Piombino, the son of Gherardo Appiano, whom he succeeded in 1405, remaining under the regency of his mother Paola Colonna until coming of age...

.