Thomas Paliser Russell was founding member, and leading organiser, of the United Irishmen marked by his radical-democratic and millenarian convictions. A member of the movement's northern executive in Belfast, and a key figure in promoting a republican alliance with the agrarian Catholic Defenders, he was arrested in advance of the risings of 1798 and held until 1802. He was executed in 1803, following Robert Emmet's aborted rising in Dublin for which he had tried, but failed, to raise support among United and Defender veterans in the north.