For background on how the map was made (and its flaws), see the relevant blog entry.
| Lafferty | fairly numerous: Galway-Mayo, Ulster etc. Ir. Ó Laithbheartaigh, an aspirated form of Flaherty, q.v. The family were important in Tyrone and Donegal in 16 cent. IF. |
| Laverty | numerous: Ulster generally. Louth, Galway etc. Ir. Ó Laithbheartaigh (Laifeartaigh). sept of Donegal and Tyrone. Cognate with O'Flaherty but a distinct Ulster grouping. See also Lafferty. IF & SI. |
| MacClafferty | Quite numerous: Donegal-Derry etc. Ir. Mac Fhlaithbheartaigh, princely, generous. Also Mac Laverty, q.v. |
| MacLaverty | mod.nos: Antrim-Belfast. Ir. Mac Fhlaithbheartaigh, "lordly in action". Ulster and Scottish name. Compare O'Flaherty. |
| Ó Laithbheartaigh | Laverty, Lafferty: líonmhar: Cúige Uladh, Gaillimh-Maigh Eo. Ó Flaithbheartaigh le séimhiú ar an "F". Bhí an chlann cun tosaigh i dTír Chonaill sa 16 céad nuair a tugadh tiarnaí Aileach orthu. IF. |
DEDs where Laverty and a second surname are found together
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