High Quality Content by WIKIPEDIA articles! Walsh Island (Irish: Inis na mBreatnach) is a small village in County Offaly, Ireland. It takes its name from the surrounding hinterland which is a fertile area of land on a hill (104m) located in a vast area of bogland known as the Bog of Allen, (hence, "island"). The village is one kilometre west of the R400 regional road which runs through the bog below.