Pepin II Quentin De Vermandois
Pepin II Quentin was born in 0817 in Perronne.  He died after 0860.

 Bernard De Vermandois
Bernard was born about 0845 in Vermandois, Normandy, Neustria.

 Pippin II De Vermandois
Pippin II was born about 0846 in Vermandois, Normandy, Neustria.

 Herbert I De Vermandois
Herbert I was born about 0850 in Vermandois, Normandy, Neustria.  He died in 0900.