Lord of Combourg

The lordship was created by Junguené, bishop of Dol, before 1040.

It originated in fifteen parishes detached from the episcopal régaire, the temporal jurisdiction of the bishopric, for the benefit of Junguené's brother, Riwallon.

The latter was invested with it as a fief of the bishopric with the title of signifer Sancti Samsonis, that is, the standard-bearer of Saint Samson, patron of the diocese.

Riwallon was thus placed in charge of the defence of the diocese and its régaire.

He controlled the tower of Dol and commanded the garrison in the city.