Geraldine "Gerry" Plunkett Dillon (1891–1986) was an Irish republican and member of Cumann na mBan, best known for her memoir All in the blood. She was the sister of Joseph Mary Plunkett, a signatory of the 1916 Proclamation of the Irish Republic.

Joseph Mary Plunkett was an Irish republican, poet and journalist. As a leader of the 1916 Easter Rising, he was one of the seven signatories to the Proclamation of the Irish Republic. Plunkett married Grace Gifford in 1916, seven hours before his execution.