Gregory family: papers of Duncan Farquharson Gregory (1813 - 1844): Letter from Professor Adam Sedgwick to Mrs Margaret Alison Letter from Professor Adam Sedgwick, Cambridge, to Mrs Margaret Alison, in which he expresses his shock at the severity of Duncan Farquharson Gregory's illness and his remorse at sending him a light-hearted letter. He advises her to tell her brother that he is dying and to eat a last meal with him before he dies, 18 February 1844. 18 February 1844