Heinrich XI Von Henneberg
Heinrich XI Von was born in 1350.  He died about March 1405.

 Mathilde Zahringen
Mathilde was born about 1369.

 Wilhelm I Von Henneberg
Wilhelm I Von was born on July 31st, 1384.  He died at the age of 41 on June 7th, 1426.

 Mechtild Von Henneberg
Mechtild Von was born about 1387.  She died about 1442.