Moated site, Grangerosnolvan Upper, Co. Kildare
Aerial photographs taken by the Cambridge University Collection of Aerial Photography have revealed intriguing evidence of a medieval moated site in Grangerosnolvan Upper, County Kildare.
Moated site, Grangerosnolvan Upper, Co. Kildare
The images, catalogued as CUCAP BDO 46 and BGN 33, show distinctive cropmarks that trace the outline of what appears to be a water-filled ditch, or fosse, surrounding a rectangular enclosure measuring approximately 45 metres by 45 metres. The darker marks in the crops indicate where the medieval ditch once held water, creating different growing conditions that remain visible from above centuries after the site was abandoned.
The most striking feature visible in the aerial photographs is an entrance on the southern side of the enclosure, suggesting this was once a carefully planned defensive site. Moated sites like this were typically constructed between the 13th and 14th centuries by Anglo-Norman settlers or wealthy farming families who wanted to display their status whilst providing some measure of security for their homesteads. The moat would have been filled with water diverted from a nearby stream or spring, creating both a defensive barrier and a source of fresh fish for the household.
Today, nothing remains visible at ground level; the site has long since returned to agricultural use, with only these ghostly outlines appearing during particularly dry summers when crop growth varies over the buried archaeological features. These aerial photographs, uploaded to archaeological databases in September 2016, provide valuable evidence of medieval settlement patterns in north Kildare, adding another piece to our understanding of how the landscape was organised and defended during the Middle Ages.