(1887–1916), revolutionary and poet. Born in Dublin he was educated at Belvedere College and UCD. Persistent ill health caused him to live much of the time abroad. He sought out Thomas MacDonagh to learn Irish from him and they became friends. The Circle and The Sword (1911) was Plunkett's first collection. In 1913–14 he was editor of The Irish Review. With MacDonagh and Edward Martyn he founded the Irish Theatre in Hardwicke Street to perform Irish plays and foreign masterpieces. Although recovering from an operation on his throat, he joined the Easter Rising and was a signatory to the Proclamation of the Irish Republic. On the eve of his execution he married Grace Gifford in his cell.
From The Concise Oxford Companion to Irish Literature in Oxford Reference.