Joseph Mary Plunkett (1887-1916): born in Dublin; son of George Noble Count Plunkett; The Circle and the Sword (verse), 1911; edited the Irish Review, 1913-14; joined the IRB; Director of Operations of the Irish Volunteers, 1913; co-founded the Irish Theatre, 1914; helped Casement in attempts to secure German aid for a rising and reported to Clan na Gael on the progress of revolutionary preparations, 1915; member of the IRB Supreme Council and its Military Committee, and signatory to the Proclamation, 1916; married Grace Gifford, the artist, in Kilmainham on the eve of his execution, 4 May 1916. Collected Poems were published posthumously. Source: Foster, R.F., Modern Ireland 1600-1972, Penguin Books, 1995