This amalgamation proved successful winning a total of five Laois Minor Hurling Championship titles, including a four in a row 1976–1979.

With the smooth running of juvenile affairs taking place in the parish, the suggestion of joining to become a strong Senior Club was once again raised in January 2005.

Shane Dollard became the first Rathdowney man to bring the Bob O'Keefe trophy across the Gully when he captained Rathdowney–Errill to a Senior County title victory over Clough–Ballacolla, in 2012.

This was their first victory in the Leinster Club Championship after defeats to Rathnure (2006), Ballyhale Shamrocks (2008) and O'Loughlin Gaels (2010).

In the Leinster Club Championship of 2014 they were narrowly defeated by Kilmacud Crokes GAA (Dublin) in extra time at the quarter-final stage.

Rathdowney's Kelly O'Daly Park has hosted many County Finals, Leinster Club Championship and Inter-County matches.