It's certainly where the French got 'Automne' from. Then when they invaded the word passed, slightly corrupted, into modern English. We can thank the Americans for keeping several Old English words alive: 'skedaddle' being one, and the expression 'to bite the dust' wasn't invent by Hollywood Westerns.Well you learn something every day, I thought the English generally used the Latin derivative from autumnus - autumn.
I'll stop cussing English people when I hear them using fall in future. You'll be telling me that gotten is ok in English next!