Donamon, or more correctly, Dunamon Castle is one of the oldest inhabited buildings in Ireland and stands on raised ground overlooking the River Suck in County Roscommon.
There was a fort here from early times, but the first recorded reference to "Dún Iomghain" is in the Annals of the Four Masters for the year 1154.
It was the seat of the Ó Fionnachta chief of Clann Chonnmhaigh, one of the two main branches of this Connacht family. In 1232, Adam de Staunton fortified the site further as part of the Norman conquest, but this were retaken and demolished by the native O'Connors the following year. The rebuilt castle was occupied in 1294 by de Oddingseles.
Wikipedia https://en.wikipedia.org/wiki/Donamon_Castle
Address F42 YE13, Ireland
Coordinates 53°37'55.992" N -8°19'7.422" E
