Definition of United Irishman in English:

United Irishman

noun

historical
  • A member of a society formed in Belfast and Dublin in 1791 by Theobald Wolfe Tone and James Napper Tandy to agitate for parliamentary reform and equal religious rights.

    Although originally formed to promote union between Catholics and Protestants, the United Irishmen became a chiefly Catholic secret society which fought for an independent Irish republic and instigated the Irish Rebellion of 1798.

Origin

Late 18th century.