Julia Sinclair (died 1868) (1796–1868) Parents Sir John Sinclair, 1st Baronet Diana Macdonald Children Lady Diana Boyle George Boyle, 6th Earl of Glasgow Siblings Janet Colquhoun George Sinclair Hannah Sinclair Archibald Sinclair Helen Sinclair John Sinclair William Sinclair Alexander Sinclair Catherine Sinclair Partners George Boyle, 4th Earl of Glasgow