He fought against Salomon , King of Brittany and in 866 participated in the battle of Brissarthe alongside Robert the Strong , the Frankish Margave of Neustria .
Rorgon 's son Gauzfrid in turn became Count of Maine .
son fought against Salomon , King of Brittany and in 866 participated in the battle of Brissarthe alongside Robert the Strong , the Frankish Margave of Neustria .
Rorgon 's son Gauzfrid in turn became Count of Maine .