William B Gibbs of Peckham, London purchased in 1865 an educational 4 inch Thomas Cooke & Sons telescope. There were 4 eyepieces and a sun prism. In 1866 he further purchased an equatorial mounting for the 4 inch telescope.
William Gibbs was a good friend of James Buckingham who used the massive 21 inch refractor on Wandsworth Common in London.
In later years he purchased a 5.5 inch telescope, I don’t know if this was a Cooke telescope. He used it in a wooden observatory that he built until he was 87 years old.