Gerio di Castracane degli Antelminelli

Gerio, also called Ruggero, di Castracane degli Antelminelli was a Lucchese merchant-banker and father of Castruccio Castracani. His firm traded across France, Flanders and England, and in 1296 it still carried a large debt to the Ricciardi company; that year his son Castruccio was emancipated from him.

After the murder of the Guelph Obizo degli Obizi in 1300, the Castracani were outlawed. Gerio took refuge in Ancona on business and died there in 1301.