William Ross and Jemmy the Chinaman were hanged at Maitland Gaol, NSW on 22nd November 1859. They were the 9th and 10th people to be hanged there.
References:
Trove: https://trove.nla.gov.au
Lone Harvest, Teller of Tales By Kevin Macleod. Licensed under Creative Commons: By attribution 3.0 License http://creativecommons.org/licenses/by/3.0
Xia-Yu by Guifrog https://freemusicarchive.org/music/Guifrog#contact-artist. Attribution 4.0 International (CCBY 4.0)
https://creativecommons.org/licenses/by/4.0
Chinese Judicial Culture: From Tradition to Modernity
http://core.ac.uk/download/pdf/217064399.pdf