MacLoughlin of Roscommon County
|This sept, related to the O'Connors and
the MacDermotts assumed the surname MacLochlainn from an
ancestor named Lochlan in about the 12th century. The
family descends from Tadhg or Tiege Oge, a younger
brother of Diermod, from whom the MacDermotts took their
Both the MacDermotts and the MacLoughlins of Roscommon were a branch of the O'Connors of Connacht, descended from Brian, the eldest half-brother of Nial 'of the Nine Hostages' who died in 405 A.D. Known by the tribal appelation of Connachta, or descendants of Conn 'of the Hundred Battles,' from which the province of Connacht took its name, the kings of Connacht were for the most part excluded from the High Kingship of Ireland, which in theory alternated between the kings of the northern and southern Ui Neill (descendants of Niall 'of the Nine Hostages'). Of this line only Torlogh O'Connor (+1156) and his son, Rory (+1198) were powerful enough to break the monopoly their Ui Neill kinsmen exercised on the High Kingship of Ireland.
We have no records of the sept possessions of the MacLoughlins of Roscommon but the surname appears in the Census of 1659 in the Barony of Boyle in Roscommon and the Barony of Tyrerell in Sligo, both territories of the MacDermotts and their subchieftains, the MacDonoghs. It is therefor probable their sept holdings lay within these baronies as well.
Census of 1659 Roscommon County
Principle Irish Names: McLaghlin 08
Census of 1659 Sligo County
Barony of Tyrerell
Principle Irish Names: McLoghlin 15
Irish Patent Rolls of James I
The only pedigree evidence for this MacLoughlin sept comes from the Linea Antiqua.
110 Tadhg Mor O'Connor | |____________________ ______________________ | | | 111 Diarmod Donnchadh Tadhg oge +1165 | (MacDonogh) 112 Lochlan (a quo MacLoughlin) (MacDermott) | 113 Amhlaoibh (Awley) McLoughlin | 114 Murtach McLoughlin | 115 Aodh (High) McLoughlin | 116 Lochlan McLoughlin | 117 Mathias McLoughlin | 118 John McLoughlin | 119 John Oge McLoughlin | __________|_________ | | Manus McLoughlin Roger McLoughlin
(MacLoughlin of Roscommon)
|O'Clery's Book of Genealogies
Genelach Meic Diermada
1006. Brian occ m Briain m Ruadri m Taidg m Ruaidri oicc
m Ruaidri caoich m Aedha m Concobhair m Tomoltiagh m
Mail ruanaidh m Giolla crist m Concobair m Corbmaic m Tomaltaigh na
cairrge m Cochobhair m Diermada (a quo mac Diermada) m Taidhg
m Mail ruanaidh m Taidhg m Muircertaigh m Mail ruanaidh moir m
Taidhg m Cathail m concobhair m Taidhg moir m Muirghiusa m
Tomaltaigh m Murghaile m Innrecthtaigh m Muiredhaigh muillethain m
Ferghusa m Raghallaigh m Uadach m Aedha m Echach tirmcarna m
Ferghusa m Muiredaigh mail m Eogain srebh m Duach galaigh m Briuin
m Echach mugmedoin.