St Catherine's Well in Fieldstown, Co. Dublin sits quietly within the grounds of Fieldstown House, sheltered under trees and enclosed by a low stone wall. What makes it quietly strange is the completeness of its abandonment: this was once a site of active communal religious practice, and the structure built to honour it still stands, yet the veneration is entirely gone.

Holy wells were focal points for patterns, the anglicised form of the Irish word "patrún", meaning patron. A pattern was an annual gathering held on a saint's feast day, typically combining prayer, ritual circuits of the well, and social occasion. St Catherine's Well was the site of one such pattern, noted by folklorist Caoimhín Ó Danachair in 1958 and by Healy in 1975, both of whom recorded it as no longer active. Folklore gathered from Killossery School, and preserved in the Schools' Collection (Volume 0789, Page 259), offers an earlier description of the well as it was known locally: a stone-roofed structure surrounded by a low wall and a small iron gate, set in the lawn of Fieldstown House in the townland of Kilsallaghan. The same account notes an ancient graveyard nearby, overgrown with trees and scattered with old rough headstones, most of them lying flat. That graveyard, associated with St Bride's church, sits roughly 75 metres to the west of the well and remains a separate recorded monument.

The well is on private grounds at Fieldstown House, so access is not straightforward, and it is not a site maintained for visitors. Those with an interest in the broader area will find the combination of the well, the ruined church, and the overgrown graveyard a concentrated piece of a landscape that held religious significance for a long time. The Schools' Collection entry, available through the Dúchas digitisation project at duchas.ie, is worth reading before any visit, not least because it captures the texture of local memory at a moment when that memory was still vivid enough to be written down.