Thomas Dermody (1775–1802) was an Irish poet. He wrote under pseudonyms including Mauritius Moonshine, and Marmaduke Myrtle.
Dermody was born in Ennis. He was scholarly but lived hard, and made little of his life. He spent some time as a soldier.
Dermody published two books of poems, which after his death were collected as The Harp of Erin. Some 56 of his sonnets being published in various works, from his first 1789 collection Poems to those published in 1792, with a few posthumously published verses in the biography by James Grant Raymond. Samuel Taylor Coleridge took an interest in some of his verse which had been included in the literary magazine The Anthologia Hibernica.
This article incorporates text from a publication now in the public domain: Cousin, John William (1910). A Short Biographical Dictionary of English Literature. London: J. M. Dent & Sons. Wikisource