Jean III De Walcourt
Jean III De was born in 1377.  He died  due to Executed at the age of 31 on September 28th, 1408.

 Margareta Von Elter
Margareta Von was born about 1392.

 Agnes De Walcourt
Agnes De was born before June 1409.  She died on March 22nd, 1441.

 Marguerite De Walcourt
Marguerite De was born before June 1409.