The son of William Stratton Liddiard of Wiltshire, the poet attended University College Oxford, leaving to enlist in 1794. After attaining the rank of Captain he left the army with the intention of joining the clergy, which he did after taking his B.A. at Trinity College Dublin in 1803. He was appointed chaplain to the fourth duke of Richmond, Lord Lieutenant of Ireland, who gave him the rectory of Knockmark in County Meath. After resigning the living to his son, Liddiard spent his later years in Bath.
The life-boat, or Dillon O'Dwire: a poem. 1815.
Mont St. Jean: a poem. 1816.
The legend of Einsidlin: a tale of Switzerland with poetical sketches of Swiss scenery. 1829.
A three month's tour in Switzerland and France. 1832.
Retrospection; or the light of days gone by, and other poems. 1841.