Anglo-Irish socialite, made famous by her family connections and her reputation as a witty conversationalist. Her charm and humour made her a popular guest at salons in Paris between the wars, standing out even in a social circle known for its flamboyant talkers.
Wilde, born three months after her uncle Oscar Wilde’s arrest for homosexual acts, was the only child of Oscar’s older brother, Willie. Her father died just a few years later, and she was raised by her mother and her stepfather, the translator Alexander Teixeira de Mattos.
In 1914, she travelled to France in order to drive an ambulance in World War I. About 1917 or 1918, while both were living in Paris, she had an affair with one of her fellow ambulance drivers, Standard Oil heiress Marion “Joe” Carstairs, who in the 1920s became a speedboat racer and was known as “the fastest woman on water.” Although she “revelled in” attracting both men and women, Wilde was primarily, if not entirely, lesbian.
Wilde’s longest relationship, lasting from 1927 until her death, was with openly lesbian American writer Natalie Clifford Barney, who was host of one of the best-known Parisian literary salons of the 20th century.
Wilde drank to excess and was addicted to heroin. She went through several detoxification attempts, none successful; she emerged from one nursing-home stay with a new dependency on the sleeping draught paraldehyde, then available over-the-counter.
In 1939 she was diagnosed with breast cancer and refused surgery, seeking alternative treatments. The following year, with the Germans approaching Paris, she fled for England. She died aged 45, on 10 April 1941, of “causes unascertainable”, according to the coroner’s inquest—possibly the cancer or possibly a drug overdose.

Link to Wikipedia biography