Richard John Bingham, 7th Earl of Lucan (18 December 1934 – disappeared 8 November 1974), commonly known as Lord Lucan, was a British peer who disappeared after being suspected of murder.
He was an Anglo-Irish aristocrat, the eldest son of George Bingham, 6th Earl of Lucan by his mother Kaitlin Dawson.
He was an evacuee during the Second World War but returned to attend Eton College, and he served with the Coldstream Guards in West Germany from 1953 to 1955.
He developed a taste for gambling and became skilled at backgammon and bridge, and he was an early member of the Clermont Club.
His losses often exceeded his winnings, yet he left his job at a London-based merchant bank and became a professional gambler.
He was known as Lord Bingham from April 1949 until January 1964, during his father's lifetime.
Lucan was considered for the role of James Bond in the cinematic adaptations of Ian Fleming's novels.
He was known for his expensive tastes; he raced power boats and drove an Aston Martin.
In 1963, he married Veronica Duncan, with whom he had three children.
The marriage collapsed late in 1972, and he moved out of the family home at 46 Lower Belgrave Street in London's Belgravia to a property nearby.
A bitter custody battle ensued which Lucan lost, and he began to spy on his wife and record their telephone conversations, apparently obsessed with regaining custody of the children.
This fixation and his gambling losses had a dramatic effect on his life and personal finances.
On the evening of 7 November 1974, the children's nanny Sandra Rivett was bludgeoned to death in the basement of the Lucan family home.
Lady Lucan was also attacked; she later identified Lucan as her assailant.
As the police began their homicide investigation, Lucan telephoned his mother, asking her to collect the children, and then drove a borrowed Ford Corsair to a friend's house in Uckfield, East Sussex.
Hours later, he left the property and disappeared.
The car was found abandoned in Newhaven, its interior stained with blood and its boot containing a piece of bandaged lead pipe similar to one found at the crime scene.
The police issued a warrant for Lucan's arrest a few days later, and the inquest into Rivett's death named him as her murderer.
There has been continuing interest in Lucan's fate, and hundreds of alleged sightings have been reported in various countries around the world, none of which have been substantiated.
Lucan has not been found, despite a police investigation and widespread press coverage.
He was presumed dead in chambers on 11 December 1992 and declared legally dead in October 1999.