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
June Wyndham Davies
With a knack for spotting talent, Wyndham Davies gave the young Michael Caine his first chance in theatre, along with early opportunities for Rhys Ifans and Hugh Grant. Her inspired casting ideas whilst working for the Drama department at Granada included the suggestion of the late Jeremy Brett for the part of Sherlock Holmes in "The Adventures of Sherlock Holmes". To this day, Brett is still widely considered to have given the definitive portrayal of Conan Doyle’s detective. Wyndham Davies went on to produce the second series: "The Return of Sherlock Holmes", as well as "The Memoirs of Sherlock Holmes" in 1994, and several feature-length television films including: "Sherlock Holmes – The Sign of Four", also starring Jenny Seagrove.1986 - "Shades of Darkness" (TV Series) (1 episode) 
1980-1981 - "Cribb" (TV Series) (3 episodes) 
1981 - "Christmas Spirits" (TV Movie)