Count Ludwig Of Oudenaarde
Ludwig was born in 1239.  He died at the age of 49 in 1288.  He was buried in 1288.

 Mathilda Of Lummen
Mathilda was born in 1246.  She died at the age of 51 in 1297.  She was buried in 1297.

 Countess Adelheid Of Lummen
Adelheid was born in 1269.  She died at the age of 42 in 1311.  She was buried in 1311.