Galway Borough was a United Kingdom Parliament constituency in Ireland.
It was an original constituency represented in Parliament when the Union of Great Britain and Ireland took effect on 1 January 1801.
In July 1857, on petition, O'Flaherty was unseated—as he was guilty, by his agents, of bribery—and a new writ was then issued in February 1859.
Morris resigned after being appointed a judge of the Court of Common Pleas.
O'Connor is also elected for Liverpool Scotland and opts to sit there, prompting a by-election.