Guillaume I De Dampierre
Guillaume I De was born in 1324.  He died at the age of 67 on October 1st, 1391.

 Catherine De Savoie
Catherine De was born about 1328.  She died on July 18th, 1388.

 Marie De Dampierre
Marie De was born about 1358.  She died on August 11th, 1412.