New Ross was a United Kingdom Parliament constituency in Ireland, returning one Member of Parliament (MP).
It was an original constituency represented in Parliament when the Union of Great Britain and Ireland took effect on 1 January 1801.
This constituency was the parliamentary borough of New Ross in County Wexford.
The use of Roman numerals in brackets is to distinguish between two MPs with the same name.
Duffy resigned by accepting the role of Steward of the Chiltern Hundreds, causing a by-election.