One (common?) POD for the British Isles is that Margaret, the Maid of Norway, survives the trip to Scotland and marries Edward II of England while ruling Scotland in her own right.
Margaret was, at the time of her death, the only child of King Eric II of Norway. IOTL, he married the sister of Robert the Bruce and had another daughter but was succeeded by his brother, Haakon V, who was in turn succeeded by his grandson, uniting the thrones of Norway and Sweden.
Assuming Eric II and Haakon V still die without legitimate male issue, would an ambitious younger son of Edward and Margaret (let's call him Eric, after his maternal grandfather) see any value in pushing his claim to the Norwegian throne?
Margaret was, at the time of her death, the only child of King Eric II of Norway. IOTL, he married the sister of Robert the Bruce and had another daughter but was succeeded by his brother, Haakon V, who was in turn succeeded by his grandson, uniting the thrones of Norway and Sweden.
Assuming Eric II and Haakon V still die without legitimate male issue, would an ambitious younger son of Edward and Margaret (let's call him Eric, after his maternal grandfather) see any value in pushing his claim to the Norwegian throne?