Ulysses S. Grant | Cary Grant | Amy Grant | 12th United States Congress | Grant Morrison | Hugh Grant | Grant | Princess Margaret, Countess of Snowdon | 12th arrondissement of Marseille | Katherine | Lou Grant | Katherine Jenkins | Katherine, Northern Territory | Katherine Mansfield | Sophie, Countess of Wessex | Lou Grant (TV series) | Eddy Grant | Second College Grant, New Hampshire | Rob Grant | Katherine Heigl | Grant County | Katherine Harris | Grant Park | Atkinson and Gilmanton Academy Grant, New Hampshire | 12th | Natalie Grant | Mary, Princess Royal and Countess of Harewood | land grant | Grant Wood | grant |
John Grant, 13th Earl of Dysart (born 22 October 1946), later her successor as Earl of Dysart and owner of the Rothiemurchus estate, married Philippa Chance on 8 May 1971 and has issue
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On her mother's death Lady Katherine's elder sister, Lady Rosamund Agnes (1914–2003) became the 11th Countess of Dysart, but never married or had issue, on her death in December 2003 Lady Katherine succeeded to the titles of Countess of Dysart and Lady Huntingtower.