Sir Robert Sinclair of Longformacus, 3rd Bt. (died 1727) (d. 1727) Parents Sir John Sinclair of Longformacus, 2nd Bt. Jean Towers Children Christian Sinclair Sir Henry Sinclair of Longformacus, 5th Bt. unknown daughter Sinclair unknown daughter Sinclair Sir John Sinclair of Longformacus, 4th Bt. Jean Sinclair Partners Christian Cockburn