We need a timescale so can you include some dates please?
When the Dominican Church Newbridge got it's new bell from the Fountain Head Bell Foundry in 1889 the foundry was represented by Mr M Byrne and his son Mr Frank F Byrne. Nationalist and Lenister Times July 1889.Frank's name might prove useful.
Did you have a Matthew married to an EmilyIrish Independent Death notice for Emily O’Byrne died Jan 26 1952 widow of Matthew O’Byrne late of Bell Foundry, James St.Her address 54 Northumberland Road.Buried Glasnevin.