Home» Monastic Sites» Derry» Aghadowey Monastery Aghadowey Monastery Derry About This Site early monastic site; hospital of St Gowry 1603 Historical Information Alternative Names: Achad-dubthaighAchedoffey Other Sites in Derry Aghanloo Monastery early monastic site; under erenaghs until 16th century Learn More Agivey Monastery early monastic site; purportedly founded 7th century by St Guar of Aghadowey; Cistercian monks grange of Macosquin Learn More Ballymagrorty Monastery (Derry Diocese) early monastic site, founded 6th century by St Colmcille Learn More Ballynascreen Monastery early monastic site, founded 6th century by St Colmcille Learn More