Before 1817 there was no formal education or language for the Deaf. However, through the years before 1817 the deaf communities were able to collectively create various signing systems of their own, of which are now known as Old American Sign Language
Hearing people tend to forget or are uneducated in the fact American Sign Language, while translated into the American English Language to learn and teach, has no connection, in terms of grammar and structure, to the spoken language of English.