Conan III 'le Gross' Duke of BRETAGNE 
Conan III 'le Gross' Duke of was born in 1096 in Bretagne, France. Conan III 'le Gross' Duke of's father was Alan IV FERGENT and his mother was Hermengarde Countess of BRETAGNE. He was an only child. He died at the age of 52 on September 17th, 1148.
They had a daughter named Constance, Princess of.
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Children
Constance, Princess of BRETAGNE
Constance, Princess of was born about 1118 in Bretagne, Indre, France.