Dudo Of Laurenburg Count
Dudo was born about 1070 in Laurenburg.  He died before 1124.  He was buried before 1124.

 Irmgard or Demudis Of Arnstein
Irmgard or Demudis was born about 1074 in Arnstein.

 Ruprecht I Of Laurenburg Count
Ruprecht I was born about 1102 in Laurenburg.  He died before May 13th, 1154.  He was buried before May 13th, 1154.

 Demudis Of Lurenburg Princess
Demudis was born in 1120.  She died at the age of 49 in 1169.  She was buried in 1169.