Gregory family: papers of Sir Philip Spencer Gregory (fl. 1856 - 1912): Letter from Herbert Robertson to Sir Philip Spencer Gregory Letter from Herbert Robertson, The Cedars, South Hackney, London, N.E., to Sir Philip Spencer Gregory correcting a mistake in his letter of 2 November concerning his confusing Glenorchi for Glenurquhart and enclosing a printed poem by Lieutenant Colonel Alfred C.E. Welby M.P., entitled 'The Hanging Tree of Auchlyne', which concerns the McGregors, 2 November 1898. 3 November 1898