|Woulfe "Sloinnte Gaedheal
Irish Names and Surnames
"MacGiolla seachlainn, M'Galaghlin, MacGlaughlin, MacClachlin,
MacGlafilin, Claffin; son of Giolla seachainn (servant of St.
The name of an old Meath family who were lords of Southern
Breagh, until soon after the Anglo-Norman invasion, when they lost
their power and were dispersed. The present anglicised forms of
Mac Giolla Seaclainn cannot be distinguished from those of Mag
Loclainn, MacLachlainn, q.v.; but that the family is still extant
is shown by the variant Mac Giolla Seachlainn.
O'Dugan, in his Topography of Meath, describes the
MacGiollaseachlainns as residents of Deisceart Breagh (southern Bregia),
now the parish of Dysart in Meath.
O'Dugan's Topographical Poems
MacGillaseachlainn the peacable
Over Southern Breagh55 of dropping flowers;
King over the fine Cairbre Gabhrain56
Is O'Ronain, brave, the hero.
55. Southern Breagh. - The family of
MacGillaseachlainn, which is to be distinguished from the
more royal family of O'Maelseachlainn is now, and has
been for centuries, totally unknown. They sank into
obscurity and poverty shortly after the English invasion.
They are mentioned by the Four Masters, A.D. 1121, 1160,
Cellach | Flannacan King of all Bregia +896 | Cellach Heir of all Bregia +895 | Tolarg King of South Bregia +895 | _______________________| | | Tigernach Fogartach King of South Bregia +916 | ____________________| | | Nial Gilla- Mochonna King of Bregia +1013 | ________________| | | Donnchadh Gilla Sechnaill King of Bregia +1034 +1027 | | | Cugaileang Mac Gillseachnaill Lord of South Bregia +1121 Maelcron Mac Gillaseachnaill Lord of South Bregia +1171 87 Niall 'of the Nine Hostages' 88 Conall Cremthainn 89 Fearghus Ceirbhoil 90 Diarmait Mac Ceirbhoil | _____________________|_______________________ | | | 91 Colman Mor Colman Bec Aodh Slaine High King +604 | (O'Melaghlin, Kings 92 Congla +630 of Meath) | 93 Conaing Cuirre +662 | According to the Irish Names Society, 94 Congalach +696 a family named O'Loughlin (or more | probably MacLoughlin) claimed descent 95 Amalgaid +718 from Flannacan, the king of South Bregia, | who died 896 A.D. This sept whose memory 96 Conaing +742 has survived in oral tradition could only | have been the MacGillaghlins. 97 Congalach +778 | 98 Cellach | 99 Flannacan King of South Bregia +896 | ________________________________|______________________________ | | 100 Mael Mithig +919 Cellach +895 | | 101 Congalach High King +956 Tolarg +895 | | | _____________|_______ | | | 102 Domnall Tigernach Fogartach +916 | | | __________________| | | | 103 Donchadh Nial +1027 Gilla-Mochonna +1013 | | | _______________| | | | 104 Ceallach Donncadh Gilla-Sechnaill +1034 +1027 Lord of South Bregia (a quo O'Kelly of Meath) (a quo Macgiollaseachlainn)