Harold Wilson was defo a blue.
I had a cousin who won a competition when he was a kid in Huyton when he drew a caricature likeness of Harold and got a prize off him. It was round the '68 final v WBA and he was saying he was a blue and going the game. He was Halifax mostly though.
….always had it in mind he supported Huddersfield. Decent team in the late 50s early 60s with the likes of Ray Wilson and Dennis Law, not mentioning their manager.