Guicher er Guicher I er
- Born circa 1015 in Château-Gontier
- Deceased circa 1061, at the approximate age of 45 years
Parents
- Renaud Renaud (c. 980 - 1066)
- Béatrice Elizabeth de Nogent-Le-Roi, du Perche (985 - )
Family
- Married with Béatrice Ne, issuing
Perronelle (c. 1030 - 1078)