Not exactly: All the claimants were related.
“In the 1050s and early 1060s, William became a contender for the throne of England held by the childless Edward the Confessor, his first cousin once removed. There were other potential claimants, including the powerful English earl Harold Godwinson, whom Edward named as king on his deathbed in January 1066.”
Edward the Confessor died childless on 5th January 1066, leaving no direct heir to the throne.
Four people all thought they had a legitimate right to be king.
Drawing of the four claimants of the throne:
Edgar Aetheling,
Harold Godwinson,
Harald Hardrada and
William
Harold Godwinson:Earl of Wessex
William:Duke of Normandy
Harald Hardrada:King of Norway
Edgar Atheling:Great-nephew of Edward
The claims that they made were connected to three main factors: family ties, promises made, and political realities.
They’re all my cousins and/or ancestors, as well. :^)