Year 1890 (MDCCCXC) was a common year starting on Wednesday (link will display the full calendar) of the Gregorian calendar and a common year starting on Monday of the Julian calendar.

Joseph Carey Merrick (5 August 1862 – 11 April 1890), sometimes incorrectly referred to as John Merrick, was an English man with severe deformities who was exhibited as a human curiosity named the Elephant Man. He became well known in London society after he went to live at the London Hospital. Merrick was born in Leicester and began to develop abnormally during the first few years of his life. His skin appeared thick and lumpy, he developed an enlargement of his lips, and a bony lump grew on his forehead. One of his arms and both feet became enlarged and at some point during his childhood he fell and damaged his hip, resulting in permanent lameness. When he was 11, his mother died and his father soon remarried. Merrick left school at 12, and had difficulty finding employment. Rejected by his father and stepmother, he left home. In late 1879, aged 17, Merrick entered the Leicester Union workhouse.

In 1884, after four years in the workhouse, Merrick contacted a showman named Sam Torr and proposed that Torr should exhibit him. Torr agreed, and arranged for a group of men to manage Merrick, whom they named the Elephant Man. After touring the East Midlands, Merrick travelled to London to be exhibited in a penny gaff shop on Whitechapel Road which was rented by showman Tom Norman. Norman's shop, directly across the street from the London Hospital, was visited by a surgeon named Frederick Treves, who invited Merrick to be examined and photographed. Soon after Merrick's visits to the hospital, Tom Norman's shop was closed by the police and Merrick's managers sent him to tour in Europe.

Florence Nightingale OM, RRC ( /ˈflɒrəns ˈnaɪtɨŋɡeɪl/; 12 May 1820 – 13 August 1910) was a celebrated English nurse, writer and statistician. She came to prominence for her pioneering work in nursing during the Crimean War, where she tended to wounded soldiers. She was dubbed "The Lady with the Lamp" after her habit of making rounds at night. An Anglican, Nightingale believed that God had called her to be a nurse.

Nightingale laid the foundation of professional nursing with the establishment, in 1860, of her nursing school at St Thomas' Hospital in London, the first secular nursing school in the world, now part of King's College London. The Nightingale Pledge taken by new nurses was named in her honour, and the annual International Nurses Day is celebrated around the world on her birthday.

Florence Nightingale was born into a rich, upper-class, well-connected British family at the Villa Colombaia, near the Porta Romana at Bellosguardo in Florence, Italy, and was named after the city of her birth. Florence's older sister Frances Parthenope had similarly been named after her place of birth, Parthenopolis, a Greek settlement now part of the city of Naples.