Born at Sydenham on 19 June 1848, he was eldest son of Henry Syme Redpath, solicitor of Sydenham, by his wife Harriet Adeney of Islington. In 1857 he entered Merchant Taylors' School, and won a scholarship at The Queen's College, Oxford, in 1867, taking a second class in classical moderations in 1869 and a third class in literæ humaniores in 1871, graduating B.A. in 1871, and proceeding M.A. in 1874 and D.Litt. in 1901.[1]
Redpath was Grinfield lecturer on the Septuagint at Oxford (1901–5). He was also sub-warden of the Society of Sacred Study in the diocese of London, and examining chaplain to the Bishop of London (1905–8). He died at Sydenham on 24 September 1908, and was buried at Shottermill, Surrey.[1]
Redpath had learned Hebrew at Merchant Taylors' School, and specialised in the Greek of the Septuagint, completing and publishing the work which Edwin Hatch had left unfinished: A Concordance to the Septuagint and other Greek Translations of the Old Testament (Oxford, 1892-1906, 3 vols.). At the end of his life he was working on a Dictionary of Patristic Greek.[1]
Redpath married at Marsh Caundle, Dorset, on 5 October 1886, Catherine Helen, daughter of Henry Peter Auber of Marsh Court, Sherborne. She died at Shottermill on 26 August 1898, leaving one son.[1]