The son of a clergyman, William Julius Mickle was educated at Edinburgh High School before working in the family brewery. In 1763 he removed to London heavily in debt; he sought the patronage of Lord Lyttelton with little success. Mickle was corrector to the Clarendon Press (1765-72) and edited the supplement to Dodsley's Collection published by Pearch. In 1779 and 1780 he served as secretary and purser in the navy, which, with his marriage in 1782 made his fortune. Like Bishop Percy, he seems to have been unwilling to own his ballad imitations, which were once highly regarded.
1753 ca.Knowledge. An Ode.
1762Pollio: an Elegiac Ode.
1764[To George Lyttelton on a proposed Imitation of Spenser.]
1767The Concubine: a Poem. [Sir Martyn.]
1769The Concubine: Advertisement.
1775 ca.An Inscription on an Obelisk, at Langford in Wilts.
1776[On the Death of David Hume.]
1776[The Neglect of Poetry.]
1780 ca.Life of the Author [by John Ireland].
1785Fragments by Leo. Number I. An American Eclogue.
1785Fragments by Leo. Number III. On Spenser's Faerie Queene.
1785Fragments by Leo. Number IV. On Spenser's Faerie Queene.
Providence, or Arandus and Emilee: a poem. 1762.
Pollio: an elegiac ode. 1766.
The concubine, a poem. 1767.
A letter to Dr. Harwood. 1768.
Voltaire in the shades. 1770.
The lusiad [Camoens, trans. Mickle]. 1776.
Sir Martyn, a poem [Concubine, renamed]. 1777.
A candid examination of the reasons for depriving the East India Company of its charter. 1779.
Almada hill: an epistle from Lisbon. 1781.
The prophecy of Queen Emma by Turgotus [i.e. Mickle]. 1782.
Poems, and a tragedy, ed. John Ireland. 1794.
Poetical works, ed. John Sim. 1806.
Poems, ed. John Ireland. 1817.