Augustus Montague Toplady /ˈtɒpləˌdiː/ (4 November 1740 – 11 August 1778) was an Anglican cleric and hymn writer. He was a major Calvinist opponent of John Wesley. He is best remembered as the author of the hymn "Rock of Ages". Three of his other hymns – "A Debtor to Mercy Alone", "Deathless Principle, Arise" and "Object of My First Desire" – are still occasionally sung today.