Family:Henri Unknown and Marie De Brienne (1)
Parents: Alain Unknown and Clemence De Dinan
Henri _____, Baron de Mayenne III
b. Abt 1260
d. 1301
Parents: Louis De Brienne and Agnes De Beaumont
Marie de Brienne, dite "Beaumont"
b. Abt 1245
d. 1328
Children
BirthDeath
1.
Marguerite d'Avaugour
1265
 
2.
Guillaume d'Avaugour
Abt 1270
 
3.
Jeanne d'Avaugour
1270
 
4.
Henri _____, Baron de Mayenne IV
Abt 1280
1331
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