Gui I De Nevers
Gui I De was born after 1145.  He died about 1176.

 Mahaut De Bourgogne
Mahaut De was born in 1150 in Bourgogne.  She died at the age of 42 in 1192 in Fontevrault.

 Guillaume De Nevers
Guillaume De was born about 1168.  He died in 1181 in (without issue).

 Agnes De Nevers
Agnes De was born about 1169.  She died in 1193 in Nevers.