His father was Rainaldo, baron of Rocca d'Evandro, and it is thought that his mother was a noblewoman from the Gaetani family.
In 1938, during the Fascist era, Alessandro Blasetti directed a sound film Ettore Fieramosca.
A more comical depiction of Ettore was performed by Bud Spencer in the 1976 film Il Soldato di Ventura.
As a result of his defeat of the French at the Challenge of Barletta, the people referred to ("renamed") him as Fieramosca (fiera = proud) a term which became associated with him as his surname.
These families grew in the provinces of Potenza, Lecce, Pescara and Veneto, with Fieramosca predominant in Sicily.