William Allingham (19 March 1824 – 18 November 1889) was an Irish poet, diarist and editor. He wrote several volumes of lyric verse, and his poem 'The Faeries' was much anthologised; but he is better known for his posthumously published Diary, in which he records his lively encounters with Tennyson, Carlyle and other writers and artists. His wife, Helen Allingham, was a well-known water-colorist and illustrator.
William Allingham was born on 19 March 1824 in the little port of Ballyshannon, County Donegal, Ireland, and was the son of the manager of a local bank who was of English descent. His younger brothers and sisters were Catherine (b. 1826), John (b. 1827), Jane (b. 1829), Edward (b. 1831; who lived only a few months) and a still-born brother (b. 1833). During his childhood his parents moved twice within the town, where the boy enjoyed the country sights and gardens, learned to paint and listened to his mother's piano-playing. When he was nine, his mother died.