Crossword puzzle clue "a saint he ain't"

He said "Slump? I ain't in no slump. I just ain't hitting"

"Sometimes I ain't so sho who's got ___ a right to say when a man is crazy and when he ain't" (William Faulkner)

The Cult "I ain't no sucker, I ain't no ___"

"Ain't" ain't part of it

What "ain't" ain't

A saint he ain't

Saint-___-du-Mont, church containing the remains of the patron saint of Paris

Saint Thomas or Saint Martin