Career
He was certainly present at the Battle of Civitate in that year. When Mauger died later that decade (in 1054, according to Goffredo Malaterra), the county passed to William, who gave it to Geoffrey. His death is a matter of confusion.
The Breve Chronicon Northmannicum states, on the authority of Goffredo Malaterra, that he died in 1063, but the chronicler apparently confused the many Geoffreys of the period.
He probably died circa 1071. He had been married in Normandy and he had three sons from that union: the aforementioned Robert.
Ralph, who inherited Catanzaro. And William, who inherited Tiriolo.
From this second marriage was born at least one son, named Tancred, who was alive in 1103 and 1104.
He also had a son, of unknown parentage, named Drogo or Tasso.