| The Earl of Seafield | |
| Honorific Prefix: | The Right Honourable |
| Office: | Member of the House of Lords Lord Temporal |
| Term Start: | 30 September 1969 |
| Term End: | 11 November 1999 |
| Party: | Conservative |
| Children: | 2 |
| Birth Name: | Ian Derek Francis Studley-Herbert |
| Birth Date: | 1939 3, df=yes |
| Birth Place: | Chelsea, London, England |
| Parents: | Derek Studley-Herbert Nina Ogilvie-Grant, 12th Countess of Seafield |
| Spouse: | |
| Nationality: | British |
Ian Derek Francis Ogilvie-Grant, 13th Earl of Seafield (born 20 March 1939) is a British peer and landowner.
Ian Seafield was born in Chelsea on 20 March 1939.[1] He is the son of Derek Herbert Studley-Herbert (1907–1960) and Nina Caroline Ogilvie-Grant, 12th Countess of Seafield, only child of the 11th Earl of Seafield. He was educated at Eton College. He was styled Viscount Reidhaven by courtesy until 1969 when he succeeded his mother to the earldom of Seafield in the Scottish peerage.[2]
As the head of the Seafield family's 84,500-acre estate, he is one of the principal landowners in Scotland.[3] The family seat is Cullen House, while Castle Grant was sold in 1983.[4]
He was a member of the House of Lords from 1969 until the reforms in 1999 removed most hereditary peers. He was affiliated with the Conservative Party.[5] Seafield was one of the largest donors to the successful 'No' campaign in the run-up to the 2014 Scottish independence referendum.[6]
On 5 October 1960, he married Mary Dawn Mackenzie Illingworth (granddaughter of Sir Percy Illingworth) at the Savoy Chapel. They had two sons:
Lord Seafield separated from his wife in August 1969, and the couple were divorced on 24 July 1971.[7] Shortly thereafter he re-married to Leila Refaat (born 1944), daughter of Mahmoud Refaat, of Cairo.