Peter O'Toole, who Groucho said had a double-phallic name, apparently lived up to both names.

"I've slept with Liz and she says I'm better in bed than you," O'Toole reportedly told Richard Burton, who was married to Elizabeth Taylor, several times.

A new biography claims Peter O'Toole had affairs with Elizabeth Taylor, Audrey Hepburn, Vivien Leigh, Diana Dors and Princess Margaret.

Princess Margaret was the Queen's sister. She and the British actor allegedly took secret holidays together on the Caribbean island of Mustique and at a private villa in Morocco, according to a report in Britan's the Mirror newspaper.

The "Lawrence of Arabia" star was married to actress Sian Phillips at the time. The princess was married to Lord Snowdon.

The new Peter O'Toole biography was written by Darwin Porter and Danforth Prince.

The book also claims the affair started in 1965 and ended in 1973 when Princess Margaret fell in love with a 25-year-old society gardener.

April Ashley, who was one of the world's most beautiful models at the time, said during the filming the 1962 epic Lawrence Of Arabia she and the O'Toole had an affair after they met at a party thrown by Spanish leader General Franco's daughter in southern Spain.

Princess Margeret met Peter O'Toole at the premiere of Lord Jim

The princess allegedly had affairs with actors Peter Sellers and David Niven.

The book was based on interviews with friends of Peter O'Toole, including Welsh actor Kenneth Griffith, who was asked by O'Toole to write his memoirs when he thought he was dying of stomach cancer in 1976.

O'Toole allegedly told Griffith and the actor James Villiers of the visit. O'Toole reportedly said he'd dreamed of living with a princess in a fairytale castle when he was a kid.

Peter O'Toole died aged 81 in 2013.

The new biography is called "Peter O'Toole: Hellraiser, Sexual Outlaw, Irish Rebel." The book is due out next month.