Linda, is this the Sprott's who owned Garnkirk estate, Glasgow? one Mark Sprott springs to mind. They moved away to the Peebles area, Garnkirk House policies are now Crow Wood golf course. They were connected to the Whitelaw's of Gartshore, Twechar. Maggie Thatcher's "every body needs a Willie!" was one.
Whether the Sprott's were part of the Glasgow Sugarocracy, I couldn't say, but the former owners of Garnkirk, the Dunlop's had interests in the West Indies and the owners of the adjoining estate, The Miller's of Frankfield, were merchants in Frankfield, Jamaica. Skoosh.