Dutch builder, primarily known in the UK for coaches, both separate bodies and integrals. They do build buses though, and have even built double-deck service buses for both the UK and Ireland in the past!
Callinan 151-G-3945, Victoria Quay Dublin, 13-05-2018
The EIreagle brand is operated by Citylink; like that brand, the vehicles are supplied by Callinan. This example appears to have worked a 660 in from Galway, and is laying over here before working the 1645 back to the City of the Tribes.