William Castle (tenor)

William Castle (22 December 1836 — 31 March 1909) was an English tenor who was active mainly in the United States during the mid to late 19th century. He appeared in several English language operettas and operas on Broadway during the 1860s, and later returned to Broadway in 1886 to star as Sándor Barinkay in the United States premiere of Johann Strauss II's The Gypsy Baron. Historian Kurt Gänzl described Castle as the "most popular operatic tenor of the Victorian era on the English-language stages of America".