John Boosey set up a book shop in London in the 1760's. His son Thomas took over and ran it with his son, also Thomas. This latter Thomas started a separate music publishing business called T. Boosey & Co. and later Boosey & Company. In 1851 they started making woodwinds and after they bought the company of Henry Distin in 1868, Brass instruments as well. They merged with their London rival Hawkes & Son in 1930 to form Boosey & Hawkes. The company still exist today, but solely as a Publisher; they sold their instrument division in 2003.

https://www.boosey.com/aboutus/History