In the heart of Malahide sprung forth a natural spring that provided water for residents in this area since prehistoric times. By the historic era, it was well protected and revered as a holy well in addition to being the source of sustenance for the fisherman village. This well is found along the old Main Street in Malahide, which was later called Chapel Street, then Old Street.
A brilliant fortified well that is attached to a chapel is St. Doulagh’s well in north Dublin County in Fingal near Malahide and Swords. Originally a Pagan spring/well-named Bethesda’s sacred pool, this was yet another glorified takeover by Christianity of Pagan sites and named after Saint Doulagh.