illegitimate son of Richard, Duke of Normandy so relation to Edward was flawed
Wessex and Normandy had been allies since 988, trading partners
when Edward faced rebellion from Earl Godwin in 1051, William sent soldiers to help
Edward promised William the throne, but he was not he only one promised it
claimed in 1064, Harold Godwinson swore under oath to support William's claim
good military leader and supported by the Pope