Margaret Sinclair Peerage person ID=667994 Parents Margaret Borthwick Oliver St Clair, 12th Baron of Roslin Children Henry Lauder Katherine Lauder Robert Lauder of Popill George Lauder of The Bass Janet Lauder James Lauder of the Bass Siblings George Sinclair of Roslin, younger William St Clair, 13th Baron of Roslin Partners Robert Lauder