King Henry II was a grandson of Henry I through his mother Matilda. Henry II’s father was a Plantagenet so Henry II was the first Plantagenet king. I don’t know if the Plantagenets also had Scandinavian ancestry. They were rulers of Anjou in France.
You are correct, but the poster to whom I was responding identified Normans specifically and appeared to conflate them lineage with the rest of the other tribes which formed France.
For a time Britain considered portions of continental France including Anjou and Brittany (a semi-autonomous region on the larger land mass) to be under English rule in part due to the fact that Vikings were thrown out of Brittany by the Anglo-Saxons. Calais was in fact Britain's last foothold on continental France.
FReegards!