Ó Conghalaigh
Ó Conghalaigh is a Gaelic-Irish surname. It derives from the forename Conghal, meaning "fierce as a hound". It is often anglicised as Connolly, Connally, Connelly and occasionally as Conley. In modern Irish it may be spelled as Ó Conghaile.
Overview
A number of distinct and unrelated families bore the surname in Gaelic Ireland, and with a number of spelling variants. They included:- Ó Conghalaigh of Iar Connacht
- Ó Coingheallaigh in the Kingdom of Desmond
- Ó Conghalaigh of Derrygonnelly, Fear Manach
- Ó Conghalaigh of Airgíalla
- Ó Conghaile Muirthemne from County Louth
Conneely was found exclusively in Connacht in 1890, with most occurrences in County Galway, giving Ballyconneely its name and is an entirely separate sept.
County Monaghan
The Ó Conghalaighs of Airgíalla were either a branch of the Southern Uí Néill who removed to Airgíalla, or a branch of the Mac Mathghamna, kings of Airgíalla from the mid-13th century to 1590.John Grenham says of them "They are first noted as coming to prominence in the fifteenth century and are recorded as having "Chiefs of the Name" up to the 17th century. They were instrumental in organising the native Irish Rebellion of 1641 and, following its failure, lost their power and possessions." Descendants of this family included William Conolly, James Connolly and Paudge Connolly.