John H. Watson, M.D., known as Dr. Watson, is a character in the Sherlock Holmes stories by Sir Arthur Conan Doyle. Watson is Sherlock Holmes's friend, assistant and sometime flatmate, and is the first person narrator of all but four stories in the Sherlock Holmes canon.

Doctor Watson's first name is mentioned on only three occasions. Part one of the very first Sherlock Holmes story, A Study in Scarlet, is subtitled 'Being a reprint from the Reminiscences of John H. Watson, M.D., Late of the Army Medical Department'. In '"The Problem of Thor Bridge"', Watson says that his dispatch box is labeled 'John H. Watson, M.D'.Watson's wife calls him 'James' in "The Man with the Twisted Lip"; Dorothy L. Sayers speculates that Morstan may be referring to his middle name Hamish (which means James in Scottish Gaelic), though Doyle himself never addresses this beyond including the initial. In every other instance, he is called either Doctor or Watson, or both together, and his first name is never used again.

Sherlock Holmes ( /ˈʃɜrlɒk ˈhoʊmz/) is a fictional detective created by Scottish author and physician Sir Arthur Conan Doyle. The fantastic London-based "consulting detective", Holmes is famous for his astute logical reasoning, his ability to adopt almost any disguise, and his use of forensic science skills to solve difficult cases.

Holmes, who first appeared in publication in 1887, was featured in four novels and 56 short stories. The first novel, A Study in Scarlet, appeared in Beeton's Christmas Annual in 1887 and the second, The Sign of the Four, in Lippincott's Monthly Magazine in 1890. The character grew tremendously in popularity with the first series of short stories in Strand Magazine, beginning with A Scandal in Bohemia in 1891; further series of short stories and two novels published in serial form appeared between then and 1927. The stories cover a period from around 1880 up to 1914.

All but four stories are narrated by Holmes's friend and biographer, Dr. John H. Watson; two are narrated by Holmes himself ("The Blanched Soldier" and "The Lion's Mane") and two others are written in the third person ("The Mazarin Stone" and "His Last Bow"). In two stories ("The Musgrave Ritual" and "The Gloria Scott"), Holmes tells Watson the main story from his memories, while Watson becomes the narrator of the frame story. The first and fourth novels, A Study in Scarlet and The Valley of Fear, each include a long interval of omniscient narration recounting events unknown to either Holmes or Watson.

Elvis Costello (born Declan Patrick MacManus, 25 August 1954) is an English singer-songwriter. He came to prominence as an early participant in London's pub rock scene in the mid-1970s and later became associated with the punk/New Wave genre. Steeped in word play, the vocabulary of Costello's lyrics is broader than that of most popular songs. His music has drawn on many diverse genres; one critic described him as a "pop encyclopaedia", able to "reinvent the past in his own image".

Costello has won multiple awards in his career, including a Grammy Award, and has twice been nominated for the Brit Award for Best British Male. In 2003, Elvis Costello & the Attractions were inducted into the Rock and Roll Hall of Fame. In 2004, Rolling Stone ranked Costello number 80 on their list of the 100 Greatest Artists of All Time.

Costello was born Declan Patrick MacManus in St Mary's Hospital, London, the son of Lilian Alda (née Ablett, b. 1927, Liverpool) and Ross MacManus (1927–2011), a musician and bandleader. He is of Irish heritage. Costello lived in Twickenham, attending Hounslow Secondary Modern School, which is now St Mark's Catholic Secondary School, in neighbouring Hounslow. With a musically inclined father (who was a jazz trumpeter and sang with The Joe Loss Orchestra), Costello's first broadcast recording was alongside his dad in a television commercial for R. White's Lemonade (I'm a Secret Lemonade Drinker). His father wrote and sang the song; Costello provided backing vocals. The advertisement won a silver award at the 1974 International Advertising Festival.