Maurice Costello
Costello was born in Pittsburgh, Pennsylvania to Irish immigrants Ellen (née Fitzgerald; born 1853) and Thomas Costello (born 1852). He made his film debut in 1908, but was long believed to have debuted in "Adventures of Sherlock Holmes; or, Held for Ransom" (1905), supposedly playing the lead in what is regarded as the first serious film to feature the character of Sherlock Holmes, since it was preceded only by the 30-second comedy film "Sherlock Holmes Baffled" (1900). However, Holmesian scholar Leslie S. Klinger has written that the identification of Costello in the role is flawed. Klinger states that the first identification of Costello with the role was in Michael Pointer's "Public Life of Sherlock Holmes" published in 1975 but Pointer later realized his error and wrote to Klinger stating
Jeremy Brett
Although Brett appeared in many different roles during his 40-year career, he is best remembered for his performance as Sherlock Holmes in "The Adventures of Sherlock Holmes", a series of Granada Television films made between 1984 and 1994. These were adapted by John Hawkesworth and other writers from the original stories by Sir Arthur Conan Doyle. Even though he reportedly feared being typecast, Brett appeared in 41 episodes of the Granada series, alongside David Burke and, latterly, Edward Hardwicke as Dr Watson. Jeremy Brett and Edward Hardwicke appeared on stage in 1988 and 1989 in "The Secret of Sherlock Holmes" directed by Patrick Garland.