Henry VI von Brunswick , Duke of Saxony
Henry VI von was born in 1173 in Braunschweig, Brunswick, Germany.  He died at the age of 54 on April 28th, 1227.

 Agnes von Hohenstauffen
Agnes von was born in 1176 in Honenstauffen, Schwaben, Germany.  She died at the age of 28 on April 9th, 1204.

 Agnes von Brunswick
Agnes von was born in 1202 in Rheinland, Prussia.  She died at the age of 65 on August 16th, 1267.