Gebhard I of Niederlangau
Gebhard I of was born in 0826 in Lahngau,Hessen-Nassau,Germany.  He died at the age of 53 in 0879.

 Judith of Argengau
Judith of was born in 0842.  She died at the age of 46 in 0888.

 Count Udo I of Lahngau
Udo I of was born in 0832.