GEOFFREY IV de MAYENNE
GEOFFREY IV was born about 1142 in Mayenne, France.^1 1 

 ISABEL (Meullent) de BEAUMONT
ISABEL (Meullent) was born in 1148 in Meulan, Ile de France, France.¹   She died at the age of 72 on May 10th, 1220.¹ 

 JUHEL III de MAYENNE
JUHEL III was born in 1168.¹   He died at the age of 52 on May 4th, 1220 in Egypt.¹