Biography (Source: WikiPedia)
Aileen Sibell Mary Plunket was an Anglo-Irish society hostess. She was one of the "Guinness Golden Girls" who were icons in the 1920s, along with her sisters Maureen and Oonagh. In 1923, she and her sisters were sent on a world tour in her father's high masted yacht, Fantome II. When she married Brinsley Sheridan Plunket, her father bought her Luttrellstown Castle near Dublin. They divorced in 1940.
Then on 19 December 1956, Rybar married Aileen Plunket née Guinness, one of the "Guinness Golden Girls". They lived on the 570-acre Luttrellstown Castle estate near Dublin, Ireland, and "set about trying to re-create the thirties" with lavish parties and guests including the Duchess of Windsor. They separated in 1965, as Rybar had become "an extravagance even she could not afford".