Michael P Barrett, Syamal Roy, Heather M Vincent, Vyacheslav Yurchenko
2 June 2026 marked the centenary of the death of Sir William Boog Leishman, the Scottish physician after whom Leishmania was named. However, he was not the first to describe the parasite. In this article, we recount this discovery and explain the etymological conventions that ensured Leishman's name was preserved in scientific history.