How many movies have Danny O'Carroll and Martin Delany collaborated on?

They have worked on 4 movies together! Their first movie together was Mrs. Brown's Boys: The Last Wedding - Part 1 (2002) while their highest rated movie together was Mrs. Brown's Boys Live Tour: Mrs. Brown Rides Again (2013). They have not worked together since Mrs. Brown's Boys D'Movie (2014). They are most known for their comedy films together.