Castledillon, County Kildare
townland in Donaghcumper, County Kildare, Ireland
Castledillon (Irish: Díseart Iollan) is a civil parish on the banks of the River Liffey near Straffan, County Kildare in Ireland. The civil parish, which is approximately 4.4 km2 (1.7 sq mi) in area, contains the townlands of Castledillon Lower and Castledillon Upper.
Etymology
The Irish name Disert-Iolladhan (Disertillan) translates as Iolladhan's or Illan's hermitage. The word Castle was substituted for Disert as in last name. Ilann's feast day is listed as 2 Feb in the Martyrology of Tallaght and he was accorded a genealogy which indicated close kinship with the Ui Dunglainge kings of Leinster. The ancient Irish genealogy claims that Cormac: second son of Olioll, was King of Leinster for nine years; abdicated A.D. 515, and died a monk at Bangor, 567, had: 1. Cairbre Dubh, King of Leinster, who died in 546; 2. Felim, from whom descended Cormac, of Tullac; 3. Iolladon, priest of Desert Iolladoin (now "Castledillon"), who had St. Criotan (11 May), of Magh Credan and Acadfinnech (on the river Dodder), and of Crevagh Cruagh, County Dublin.
“Castledillon, County Kildare” enters the record as townland in Donaghcumper, County Kildare, Ireland. Crown Archives preserves that source wording while asking what Castledillon, County and Kildare can confirm, complicate or overturn.
Why this record matters
“Castledillon, County Kildare” is worth following because a concise public description often conceals a longer documentary argument. Here, Castledillon, County and Kildare provides the most credible route into that argument.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Nov 23, 2025. The linked authority identifier is Q5050494. Authority coordinates are 53.309, -6.594. None of the 1 selected statements returned an explicit reference.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Castledillon, County Kildare”, its source revision and the description used here.
- Expand the search: follow Castledillon, County Kildare primary sources, Castledillon, County Kildare archive and Castledillon research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Castledillon, County Kildare”?
- What physical evidence or contemporary plan supports the description?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Castledillon, County Kildare” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.