Mary Somerville Peerage person ID=564279 (1780–1872) Parents Mariota Baillie John Somerville, 3rd Lord Somerville Children Allan Lockhart, of Cleghorn, 2nd of Cleghorn Siblings Sir John Somerville, 1st of Cambusnethan William Somerville, Master of Somerville Elizabeth Somerville Helen Somerville Partners Sir Stephen Lockhart