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Carsonstown, County Down


Ir. Baile na gCasán ‘townland of the footpaths’


There is some variation in the 17th-century spellings of this townland but the majority of them point to Baile na gCasán ‘townland of the footpaths’ as the original name (casán for cosán, Ballinegassan 1623, 1630, 1645; compare Annagassan, Ir. Ath na gCasán, in Co. Louth, AGBP 51). Bellynecassin or Carsins in 1682 may have arisen by confusion of ss and rs, and a further variant ‘(the) Carsons’ c.1692 also reads rs and has what is probably an English plural s at the end.  Historically it is very unlikely that a townland would simply be named from a plural surname, although once the English surname Carson had arrived in the area it is understandable that English speakers might ‘translate’ Baile na gCasán  as ‘Carsonstown’.  Carson’s Dam Bridge can be found in the townland of Aghnadaragh neighbouring to the east.


KM, 2009

Additional Information

Historical name form

Old FormRef. DateReference
Balligassan1605CPR Jas I 73a
(?)Ballenelassan1623Ham. Copy Inq. [1623] xlii
Ballenegassan1623Ham. Copy Inq. [1623] xli
Ballenegassan1623Ham. Copy Inq. [1623] xxxii
(?)Ballenacrossan1630Ham. Patent [1630] xiv
(?)Ballenegassan1630Ham. Patent [1630] xiii
(?)Balleneglissan1630Ham. Patent [1630] xiv
(?)Ballenelesson1630Ham. Patent [1630] xiv
Ballynecrossan1632Inq. Ult. (Down) $29 Car. I
Ballenegassan1645Inq. Ult. (Down) $104 Car. I
Ballenegassen1645Inq. Ult. (Down) $104 Car. I
Bellynecassin or Carsins1681Ham. Jointure 125
Carsons, the Mill & Half Liswine1692cHam. Rent-roll 130
Carsons1696Ham. Partition Jointure Lands 148
Carsons, the1696Ham. Partition Jointure Lands 148
Carsonstown1755Map of Down (OSNB) E15
Carsonstown1810Wm. Map (OSNB) E15
Carsonstown1834cJ O'D (OSNB) E15
Castlereagh Upper
Parish in 1851
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