William Birch
William Birch was an English watchmaker, silversmith and jeweller based in London.
He is recorded as working in Fenchurch Street in London around 1840 and was a successor to William Turner. The firm became Gaydon & Birch when he went into partnership with Gaydon in 1875 and it was still trading in 1893.
He died at the age of 88 in 1903.
The British Museum has some examples of his work on display.