Who would have believed it, Barry's was set up by one of the Chipperfield sisters, along with her hubby Francesco Trufelli (what a glamorous name), the director of the Royal Italian Circus. They decided that the name Chipperfields was too long and Trufellis was too foreign for Northern Ireland. The first delivery lorry that arrived to the new amusement park was from Barrs, so they named the park Barrys.
http://www.barrysamusements.com/history.htm
For foreign visitors to this site, Barrys is a bit like Disney World, a phenomenal entertainment extravaganza ;-) Disney World it may not be, but the very mention of its name will bring a smile to generations of people here.