Maaaaybe?
The major problem with the Maesters in world-building terms is that they significantly pre-dated the coming of the Andals: the order was founded thanks to Peremore Hightower, who was the son of Uthor the founder of the High Tower, who married Maris the Maid, daughter of Garth Greenhand, which is all the way back in the Dawn Age.
But according to the modern maesters, the First Men didn’t write in books, so what the hell were the Maesters of the Citadel doing for thousands of years?