We are Irish. My mother was as blonde as any Scandinavian. She herself thinks she was a product of the Viking Rapes.
My father when he was young had the blackest of jet-black hair. Probably a member of the fabled “Black Irish” said to be descended from Spanish sailors who became stranded there.
When you’re an island the DNA comes in and out more or less like the seagulls.
The original "Celts" who colonized Britain and Ireland probably had dark hair and eyes, i.e. looking more like Central Europeans than like Norsemen.
Spanish Armada survivors' descendents most likely...............
My mother was Black Irish, very pretty but very nasty. Someone explained that the Spanish had mixed Arab blood, which would account for a cruel streak.