Alain II D'avaugour
Alain II was born about 1230.  He died about 1265.

 Clémence De Dinan
Clémence was born about 1230.  She died before 1263.

 Henry III Dit Henriot D'avaugour
Henry III Dit Henriot was born about 1250.  He died on November 11th, 1301.

 Jeanne D'avaugour
Jeanne was born about 1260.  She died in 1299.