Pfalzgraf Conrad von der Rhein
Conrad was born before 1147.  He died in 1195.

 Irmingard von Henneberg
She died in 1197.

 Agnes Hohenstaufen
Agnes was born in 1176.  She died at the age of 28 on May 9th, 1204.  She was buried in St. Marien in Stade.