John Henry Walsh FRCS (21 October 1810 – 12 February 1888) was an English sports writer born in Hackney, London who wrote under the pseudonym "Stonehenge." Walsh was educated in private schools and became a fellow of the Royal College of Surgeons in 1844. He worked as a surgeon for several years, but gradually changed his profession after his written works on rural sports became successful. He relocated from the country to London in 1852. The following year he published his first important book, The Greyhound (3rd ed. 1875), a collection of papers originally contributed to Bell's Life.