When the new cathedral was completed in Cavan Town in 1942, the old cathedral was dismantled and largely re-erected, on a smaller scale, in nearby Ballyhaise as St Mary's Church. The 'new' church replaced an older and smaller T-plan chapel of c. 1810. The interior of St Mary's, when it was rebuilt, was very different from how it looked when it was a cathedral in Cavan Town, the new, much plainer 1940s interior being designed by W.H.
When the new cathedral was finished in Cavan Town in 1942, the old cathedral was dismantled and largely re-erected, on a smaller scale, in nearby Ballyhaise as St Mary's Church. The 'new' church replaced an older and smaller T-plan chapel of c. 1810. The interior of St Mary's, when it was rebuilt, was very different from how it looked when it was a cathedral in Cavan Town, the new, much plainer 1940s interior being designed by W.H.