Not a vague tradition or a pious legend, but a recorded institution with a name: Cell na nInghen, which translates roughly from the Irish as "the church of the daughters" or "the cell of the young women." The difficulty is that nobody now knows exactly where it stood.

The existence of Cell na nInghen is documented through scholarly work compiled by O'Dwyer in 1981, later cited by Bradley and King in 1988, and it is noted as lying quite close to the main Tallaght monastery. That monastery was itself a place of considerable importance in early Christian Ireland, and the presence of a separate female religious house nearby would have been consistent with a broader early medieval pattern in which communities of women lived and prayed in proximity to, but distinct from, male monastic establishments. Cell na nInghen fits into this world, a world of small, serious communities of women whose lives and locations have been far less thoroughly recorded than those of their male counterparts. The research for this entry was compiled by Geraldine Stout, and even careful scholarship can go only so far when the physical evidence has not survived or has not yet been identified.

There is, in an honest sense, nothing to visit here, at least not in any conventional way. Tallaght is today a large suburban district of Dublin, and the landscape that surrounded the early monastery has been substantially altered over many centuries. What makes Cell na nInghen worth knowing about is precisely its absence from the visible record. The site serves as a reminder that the historical map of early medieval Ireland is still incomplete, that institutions once real enough to carry names and house communities can dissolve so thoroughly that their physical location becomes genuinely unknown. If you walk through Tallaght with this in mind, the ordinary streets carry a slightly different weight.