Olivier IV De Clisson
Olivier IV De was born about 1296.

 Jeanne De Belleville-Montagu
Jeanne De was born about 1296.  She died in 1359.

 Isabeau De Clisson
Isabeau De was born about 1321.  She died on April 5th, 1343.

 Olivier V De Clisson
Olivier V De was born on April 23rd, 1336.  He died at the age of 71 on April 23rd, 1407.