Guillaume I ALENÇON (D'), comte du Perche [648] ¹

   Another name for Guillaume was William.

  General Notes:

Source <http://a.decarne.free.fr/gencar/dat70.htm#21> :
"... Famille 1:
Conjoint:
Ganelon (de), Mathilde dame de Condé-sur-Noireau Sexe: Féminin. Naissance : vers 970 à Ganelon (Normandie). Décès : 1033
Parents:
Père: Ganelon (de), Arnulf

Enfant(s):
Alençon (d'), Guérin, Sexe: Masculin. Décès : avant 1030
Alençon (d'), Foulques, Sexe: Masculin. Décès : avant 1030
Alençon (d'), Robert, seigneur de Bellême, Sexe: Masculin. Décès : 1034 à la prison de Ballon
Alençon (d'), Guillaume, comte de Bellême

Famille 2:
Enfant(s):
Alençon (d'), "Garin" ou Warin, seigneur de Domfront."
______________________________________
Source <A genealogical history of the family of Montgomery> (Montgomerie) :
"... William I. succeeded his father in the seigneury of Belesme, to which he added the county of Perche; and Duke Richard II. gave him the castle of Alenc,on and its dependencies. And it is thought that the county of Domfront was also given to him, since he built the castle of that name, and founded about the year 1025, in the neighboring forest, the abbey of Lonlai. Notwithstanding this act of piety, William was none the less unprincipled in his character. Envious and sanguinary, this disposition had made him commit great disorders. Dying about the year 1028, he had by his wife Mathilde,
I. Foulques, who was killed in a combat near Blavon.
II. Robert, who succeeded him.
III. Warin, or Guerin, Seigneur de Domfront, married Melisende, or Mathilde, sister of Hugh, Archbishop of Tours, and died about 1026."