Problem: Georgette Heyer (; 16 August 1902 - 4 July 1974) was an English historical romance and detective fiction novelist. Her writing career began in 1921, when she turned a story for her younger brother into the novel The Black Moth.

Heyer was born in Wimbledon, London, in 1902. She was named after her father, George Heyer. Her mother, Sylvia Watkins, studied both cello and piano and was one of the top three students in her class at the Royal College of Music. Heyer's paternal grandfather had emigrated from Russia, while her maternal grandparents owned tugboats on the River Thames. Heyer was the eldest of three children; her brothers George Boris (known as Boris) and Frank were four and nine years younger than her. For part of her childhood, the family lived in Paris but they returned to England shortly after World War I broke out in 1914. Although the family's surname had been pronounced "higher", the advent of war led her father to switch to the pronunciation "hair" so they would not be mistaken for Germans. During the war, her father served as a requisitions officer for the British Army in France. After the war ended he was appointed a Member of the Order of the British Empire (MBE). He left the army in 1920 with the rank of captain, taught at King's College London and sometimes wrote for The Granta. George Heyer strongly encouraged his children to read and never forbade any book. Georgette read widely and often met with her friends Joanna Cannan and Carola Oman to discuss books. Heyer and Oman later shared their works-in-progress with each other and offered criticism. When she was 17, Heyer began a serial story to amuse her brother Boris, who suffered from a form of haemophilia and was often weak. Her father enjoyed listening to her story and asked her to prepare it for publication. His agent found a publisher for her book, and The Black Moth, about the adventures of a young man who took responsibility for his brother's card-cheating, was released in 1921. According to her biographer Jane Aiken Hodge, the novel contained many of the elements that would become standard for Heyer's novels, the "saturnine male lead, the marriage in danger, the extravagant wife, and the group of idle, entertaining young men". The following year one of her contemporary short stories, "A Proposal to Cicely", was published in Happy Magazine.

did she show interest in writing at an early age?

Answer with quotes: When she was 17, Heyer began a serial story to amuse her brother Boris,

Problem: Sherlock Holmes () is a fictional private detective created by British author Sir Arthur Conan Doyle. Referring to himself as a "consulting detective" in the stories, Holmes is known for his proficiency with observation, forensic science, and logical reasoning that borders on the fantastic, which he employs when investigating cases for a wide variety of clients, including Scotland Yard. First appearing in print in 1887 (in A Study in Scarlet), the character's popularity became widespread with the first series of short stories in The Strand Magazine, beginning with "A Scandal in Bohemia" in 1891; additional tales appeared from then until 1927, eventually totalling four novels and 56 short stories. All but one are set in the Victorian or Edwardian eras, between about 1880 and 1914.

Details about Sherlock Holmes's life, except for the adventures in the books, are scarce in Conan Doyle's original stories. Nevertheless, mentions of his early life and extended family paint a loose biographical picture of the detective. An estimate of Holmes's age in "His Last Bow" places his year of birth at 1854; the story, set in August 1914, describes him as sixty years of age. His parents are not mentioned in the stories, although Holmes mentions that his "ancestors" were "country squires". In "The Adventure of the Greek Interpreter", he claims that his grandmother was sister to the French artist Vernet, without further clarifying whether this was Claude Joseph, Carle, or Horace Vernet. Holmes's brother Mycroft, seven years his senior, is a government official who appears in "The Adventure of the Greek Interpreter", "The Final Problem", and "The Adventure of the Bruce-Partington Plans" and is mentioned in "The Adventure of the Empty House". Mycroft has a unique civil service position as a kind of human database for all aspects of government policy. He lacks Sherlock's interest in physical investigation, however, preferring to spend his time at the Diogenes Club. Holmes says that he first developed his methods of deduction as an undergraduate; his earliest cases, which he pursued as an amateur, came from fellow university students. A meeting with a classmate's father led him to adopt detection as a profession, and he spent six years after university as a consultant before financial difficulties led him to accept John H. Watson as a fellow lodger in 1881 (when the first published story, A Study in Scarlet, begins). The two take lodgings at 221B Baker Street, London, an apartment at the upper (north) end of the street, up seventeen steps.

Did he refer to his brother in his stories?

Answer with quotes:
Mycroft has a unique civil service position as a kind of human database for all aspects of government policy.