[1][2] In 1825 Hartshorne was invited by his friend Frederick North, 5th Earl of Guilford, who had been appointed "archon" over the University of Corfu he had founded, to accompany him to the island, which was then ruled by the British.
[1] There he encountered gossip and innuendo that had blown up in his absence, concerned with a friendship he had made through the Roxburghe Club of bibliophiles with Richard Heber.
After two years at Leamington he took charge of the parish of Cogenhoe, Northamptonshire, from 1838 till 1850, when he was presented by the crown to the rectory of Holdenby in the same county.
He was honorary chaplain to the seventh and eighth Dukes of Bedford, and fellow of the Society of Antiquaries of London.
His archæological papers deal with the architectural history of mediæval towns and castles; medieval parliaments; the royal councils of Worcester; the obsequies of Catherine of Aragon; early remains in the great isle of Arran; the itineraries of Edward I and II; and domestic manners in the reign of Edward I.