Dietrich I Count Heinsberg-Valkenburg
Dietrich I Count was born in 1181.  He died at the age of 47 on November 8th, 1228.

 Isalde Princess Of Limburg
Isalde Princess Of was born in 1187.  She died at the age of 33 in 1220.

 Princess Agnes of Heinsberg-Valkenburg
Princess Agnes of was born in 1217.  She died at the age of 50 in 1267.