In 1379 he attempted in vain to replace the Byzantine emperor , John V Palaiologos , with his own son , Giacomo Fregoso .
Domenico di Campofregoso was exiled along with a number of his parents .
In 1379 Domenico di Campofregoso attempted in vain to replace the Byzantine emperor , John V Palaiologos , with Domenico di Campofregoso 's own son , Giacomo Fregoso .
Domenico di Campofregoso was exiled along with a number of his parents .