placenames.ie
County

Monaghan

Muineachán

Monaghan’s older regional identity and its parish geography connect it closely with neighbouring parts of Ulster and Leinster.

Recorded locationMonaghan54.16304° N · 6.95338° WInteractive map supplied by OpenStreetMap.
Recorded place location · Logainm.ieOpen in OpenStreetMap ↗

The name

A reliable full-name meaning has not been established here. The recorded Irish and English forms are given without an unsupported translation.

Recorded forms

  • Muineachán · Irish · main form · validated name
  • Monaghan · English · main form

Place & story

An inland meeting of counties

Lewis’s 1837 opening places Monaghan between Louth and Armagh on one side, Fermanagh and Cavan on the other, with Tyrone to the north and Meath to the south. The county was not an isolated unit: roads, markets, church districts and estates could connect households across those lines. A family’s nearest town or institution might lie outside the county named in a later postal address. [2]

Oriel and MacMahon country

The directory records Oriel, Uriel and Orgial as historical regional forms extending beyond Monaghan into neighbouring counties. It also associates much of the county’s political history with the MacMahons. Those names can clarify an older narrative, but should not be treated as identical to a later county or parish. Lewis’s proposed monk-related explanation of the county town’s name is not adopted as a definitive etymology here, and a local surname does not supply a personal pedigree. [2]

A town and a cross-county parish

The Monaghan town entry distinguishes an older religious site from the growth of a chartered borough in the seventeenth century. Clones provides a different example: its historical parish extended into Fermanagh as well as Monaghan. Both demonstrate the need for precise geography in family research. Keep townland, civil parish, denomination and document date, and distinguish a county-wide history from a record of one household or property. A parish total should never be mistaken for the population of its small town. [3] [4]

Geographic information

Place type
County
County
Monaghan
Coordinates
54.16304, -6.95338
Mapped area
1,294.49 km²
Logainm ID
100025 ↗

People & family history

Census figures refer to the matched historical census area for each year. Boundaries and spellings can change over time.

Explore this county

Up to 50 places per page, ordered by name.

Sources & further reading

  1. Logainm.ie — Monaghan. Place names and geographic record, licensed under CC BY 4.0.
  2. County Monaghan — A Topographical Dictionary of Ireland (1837) · Samuel Lewis · 1837
  3. Monaghan town — A Topographical Dictionary of Ireland (1837) · Samuel Lewis · 1837
  4. Clones — A Topographical Dictionary of Ireland (1837) · Samuel Lewis · 1837
  5. Boundary geometry retains its source attribution and licence in the downloadable geographic record. Map tiles © OpenStreetMap contributors.

Name record retrieved 2026-10-25 · Source record modified 2025-01-10. How this page was prepared.