Juhel II De Mayenne
Juhel II was born in 1110.  He died at the age of 51 on December 23rd, 1161.

 Clémence De Montgommery
Clémence was born in 1120.  She died before 1189.

 Clémence De Mayenne
Clémence was born in 1145.  She died before 1190.

 Geoffroi IV De Mayenne
Geoffroi IV was born in 1147.  He died at the age of 23 on February 18th, 1170.

 Mathilde De Mayenne
Mathilde was born in 1155.