Count Henry VI of Luxembourg
Henry was born in 1249 in Luxembourg.  He died  due to killed at the age of 39 on June 5th, 1288.

 Beatrice of Avesnes
Beatrice was born in 1242 in Beaumont, Hainaut, Belgium.  She died at the age of 79 in 1321.

 Count Henry VII of Luxembourg
Henry was born about 1274 in Valenciennes, Hainaut, Belgium.  He died on August 24th, 1313 in Buonconvento, Siena, Italy.