Gautier de Mayenne
He died in 1126.

 Alice de Beaugency
Alice was born in Beaugency, Orleanais, France.

 Mathilde de Mayenne
Mathilde was born in 1082 in Mayenne, France.  She died at the age of 80 in 1162 in Beaune, France.

 Juhel de Mayenne II
Juhel was born in Mayenne, France.  He died on November 23rd, 1161 in Mayenne, France.