Eudon De Penthièvre
Eudon was born in 0999.  He died at the age of 79 on January 7th, 1078.

 Tihern Ou Brient Ier De Chateaubriant
Tihern Ou Brient Ier was born in 1020.  Tihern Ou Brient Ier is no longer alive.

 Robert Du Liscouët
Robert was born about 1030.  Robert is no longer alive.