Johann IV Von Heinsberg
Johann IV Von was born about 1420.  He died on January 27th, 1448.

 Johanna Von Diest
Johanna Von was born in 1423.  She died at the age of 49 in April 1472.

 Johanna Von Heinsberg
Johanna Von was born on June 29th, 1443.  She died at the age of 26 on September 3rd, 1469.