Ian Derek Francis Ogilvie-Grant, 13th Earl of Seafield (born 20 March 1939) is a British peer and landowner.
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.
[5] Seafield was one of the largest donors to the successful 'No' campaign in the run-up to the 2014 Scottish independence referendum.
[7] They had two sons: Lord Seafield separated from his wife in August 1969, and the couple were divorced on 24 July 1971.