*Guillaume V d'Auvergne
born about 1010
died January 1059/60

father:
*Guillaume IV d'Auvergne
died 1016

mother:
*Humberge wife of Guillaume IV d'Auvergne
(end of information)

siblings:
*Robert IV (or III?) d'Auvergne died 1035

spouse:
*Philippe de Gevaudan
born about 1000 France

children:
*Philippe d'Auvergne
born about 1040 France

biographical or anecdotal information:
One source has Robert the sibling as the father which would make Guillaume IV the grandfather.

source:
LDS
ancestry.com