(b Dublin, ?1792; d London, Jan 7, 1841). Irish painter. The son of a Dublin print-seller and engraver, he may have received instruction in painting from William Sadler (c. 1782–1839), a prolific Irish painter of small landscapes. O’Connor first exhibited in 1809 in Dublin; in 1813 he went to London with Francis Danby and George Petrie, intending to settle there, but soon returned home. His earliest achievement of note was a group of topographical views, commissioned in 1818 by the 2nd Marquis of Sligo and the 14th Earl of Clanricarde (Westport, Co. Mayo, Lord Altamont priv. col.). Two of these, View of Westport with Croagh Patrick and its pendant Westport House from Barratt’s Hill, demonstrate that O’Connor was then capable of fine painting in a tightly handled 18th-century manner and that he had learnt much from the example of the Irish landscape painter Thomas Roberts (1748–78). Four views of Bridge House, Ballinrobe, Co. Mayo, and its environs (Dublin, N.G.) were also commissioned at that time and are very nearly as accomplished....