[Oztrich Boy]

Doubting his existence requires you doubt the existence of a lot of historical figures, including many of those listed above.

No it doesn't. They are on the attendence lists. Nicholas isn't

"This should be taken as fantasy because there are pretty good records of the council, and Nicholas isn't mentioned."

Any factiod we know about the alleged Nicholas comes from a hagiography written 500 years after his supposed life.

OTOH there was a Godric of Finchale, and his life was written by a contemporary

The Gripping hand. Wikipedia may be wrong. (wikipedi is wrong. who knew)

[Viennacon]

You stated that the st. was “more imaginary than Godric Gryffindor”, implying you do not believe he ever existed. Please tell us who was the bishop of Myra during this period if he wasn’t.

[Viennacon]

And you could also use the same type of logic to deny Jesus ever existed (as certain skeptics do) because he was written about some time after. Oral traditions are not to be confused with lies.