You're mistaken, Squad:
Bill and Mandy began dating when she was just 13 years and he was 47. Bill wrote in his autobiography: "When I asked to Mandy`s mom if I could invite dinner her daughter, she says that Mandy was going out on clubs at night for one year and a half. There was no objection, at 13 she was a woman".
The two married on 5 June 1989 at St. John Anglical Church in London. There were 400 guest, some of them were Eric Clapton, Elton John and the other four Stones. Mandy spend most of the marriage in bed, because of the anorexia she was having. By 1990, the couple separated and Mandy accused Bill to introduce her to have sexual relations when she was 13. Bill pay her $500.000.
By spring 1993, it was said that Bill`s son, Stephen (31), wanted to get married Mandy`s mother (49). So, for law, Mandy Smith became granddaughter of Bill Wyman.