Wasn’t there an Indian tribe on Nantucket with blue eyes and “gray” hair?
The tribe that included the Nantucket area was the Wampanoag tribe. They were hit heavily by the epidemic in 1617 and their numbers dwindled. King Philip was the leader of this tribe that led them into open conflict with the white settlers and virtually eliminated all of the tribe. It’s highly unlikely that this tribe that had previously honored treaties with the settlers would have had unrecorded physiological differences between themselves and their surrounding tribes.
There is a theory backed up with some archeological evidence that Europeans crossed the North Atlantic during the last ice age. Some of the Aboriginal people in Northern Quebec/Ontario have very light skin and hair, so IMHO, it’s quite possible these people may have made it to what is now the Nantucket area.