Both Stanford and Sheridan were born in Dublin but pursued their careers in England; Sheridan as a prominent playwright and one-time owner of the Theatre Royal Drury Lane and Stanford as Professor of Music at the Royal College of Music and the University of Cambridge as well as a composer best remembered for his choral works.
The Critic was the penultimate of nine operas by Stanford and considered one of his best, having been well received initially and later revived by Thomas Beecham.
https://www.wexfordopera.com/programme/festival-programme/the-critic