Gundahar Bolger was born in T.A. 2774 to Gundolpho Bolger and Alfrida of the Yale.¹ After the death of his father in T.A. 2830, Gundahar became the head of the Bolger family. He married Dina Diggle with whom he had two children, Adalgar and Adaldrida.

Gundahar died in T.A. 2875, aged 101.