| The Countess of Dysart | |
| Honorific Prefix: | The Right Honourable |
| Birth Name: | Katherine Greaves |
| Birth Date: | 1 June 1918 |
| Birth Place: | North Wales |
| Death Date: | 8 November 2011 (aged 93) |
| Death Place: | Inverness-shire, Scotland |
| Spouse: | John Peter Grant |
| Children: | Lady Jane Margery Grant John Grant, 13th Earl of Dysart |
| Mother: | Wenefryde Scott, 10th Countess of Dysart |
| Father: | Owain Edward Whitehead Greaves |
Katherine Grant, 12th Countess of Dysart (1 June 1918 – 8 November 2011) was a Scottish peeress.[1]
She was born Katherine Greaves, daughter of Major Owain Edward Whitehead Greaves and Wenefryde Agatha Greaves, who succeeded as 10th Countess of Dysart (1889–1975) in 1935. 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.
In 1941, she married Lieutenant-Colonel John Peter Grant younger of Rothiemurchus (1915–1987), who succeeded his father as 15th Grant of Rothiemurchus. They had two children:
The Countess died on 8 November 2011, aged 93.[2] [3]
Her son Johnnie (John Peter Grant) then became the 13th Earl of Dysart while his son James, as heir to the earldom, became Lord Huntingtower.