Joanna of Gallura

Joanna of Gallura (1291–1339) held the title of judge of a Sardinian realm she never ruled. The only child of Nino Visconti, last ruling judge of Gallura, and Beatrice d'Este, she inherited his titles in 1296, but Pisa occupied and administered Gallura directly.

What she did own was Visconti family property, including the fortresses around Civita. She moved to Milan in 1300, when her mother married its lord Galeazzo I Visconti, and in 1309 she married Rizzardo II da Camino, lord of Treviso, being widowed in 1312.

From 1323 she lived in Florence on a pension from the Guelphs. She sold her rights to Gallura to her half-brother Azzone Visconti, lord of Milan, and Dante names Joanna and her mother in Purgatorio VIII, the canto that honours her father.