Henry Jackson, the son of a surgeon, was born in Sheffield on 12 March 1839 and died in Bournemouth on 25 September 1921. He was educated at Cheltenham College and Trinity College, Cambridge, where he progressed through the Classical Tripos as a contemporary of Richard Jebb. He became a Fellow of his college in 1864, and, with the help of its Master, W.H. Thompson, was appointed Praelector of his college in ancient philosophy in 1875, meaning that his lectures were open to the whole university. This was the first time that this field of study was accorded a named position in Britain. From 1906 until his death he was Cambridge's Regius Professor of Greek, succeeding Jebb.
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.