It is best known as the place where Alcock and Brown crash-landed after the first transatlantic flight in 1919, and where Marconi established one of his early wireless telegraphy stations. Against that backdrop, the presence of a recorded church site in the same landscape is easy to overlook, quietly absorbed into the turf and the Atlantic light.

The church at Derrigimlagh is a listed archaeological monument, which places it within a long tradition of early ecclesiastical remains scattered across this part of Connacht. Connemara contains numerous examples of early medieval and later church foundations, some associated with local saints, others with medieval parishes that contracted or disappeared entirely following the upheavals of the sixteenth and seventeenth centuries. A church recorded in such a remote and boggy setting might reflect either an early Christian foundation, perhaps a simple oratory or enclosure, or a later parish structure that served a dispersed rural community before the reorganisation of Catholic and Church of Ireland parishes in the post-Reformation period. Without more detailed recorded information available for this particular site, the precise date, dedication, and physical character of the structure remain uncertain.

What is clear is that Derrigimlagh rewards careful attention. The bog itself has preserved traces of many periods of human activity across this part of Galway, and a church site here would fit a wider pattern of early communities establishing themselves close to the coast and its resources, even in terrain that now appears inhospitable.