Which family was unwilling to share their oral teaching methods to Thomas Gallaudet?

Question

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The Braidwood family, who ran a private school for the deaf in Edinburgh, Scotland, was unwilling to share their oral teaching methods with Thomas Gallaudet. Gallaudet had hoped to learn their methods to educate deaf students in the United States, but the Braidwoods' refusal led him to seek alternative approaches, eventually collaborating with Laurent Clerc and adopting French Sign Language-based methods.

Which Family Was Unwilling to Share Their Oral Teaching Methods