https://irelandroots.com/condon.htm
https://www.johngrenham.com/findasurname
https://en.wikipedia.org/wiki/Condon_(surname)
De Canton, De Cauntoun – a Cambro-Norman name Gaelicised to De Canntún, Conndún and Condún, adopted by a Norman-Welsh family, probably from Canton in Glamorgan, Wales. The Gaelic forms were later anglicised to Condon.
The Condons settled in the counties of Cork, Limerick and Waterford. The Barony of Condons and Clangibbon in north-east Cork bears their name, the family castle of Cloghleagh being in that area. They developed as a Gaelicised sept, but like many other great Norman families, were proud to be different from their native neighbours. This is reflected in the habit of these families to use non-gaelic first names right up to almost modern times. Thus David Condon described himself in 1605 as ‘chief of his sept’.
Their problems in later times were compounded by their adherence to the Jacobites (supporters of Catholic King James II in the war against Protestant King William III / ‘William of Orange’); and they suffered in attainders and confiscations accordingly.
In Petty’s 1659 Census of Ireland, we find Condon listed as a Principal Irish Name in:
County Cork: Barrymore Barony with 13 families; the returns for Condon and Clangibbon are missing.
In County Limerick, Connolough Barony we find Condon (x9).
In County Waterford, Barony of Cosmore and Cosbride there are Condon(x6).
In County Tipperary (south), Barony of Iffay and Offay there are Condon (x12).
By the time of the mid-19th century Griffith’s ‘Primary Valuation’, Condon households are mostly found in: Cork (221); Limerick (153); Tipperary (145); and Waterford (99).
In the Registrar General’s Report on Births in 1890, most Condons were registered in counties Cork, Tipperary and Kerry.
Two famous Condons:
David Condon (another David, see above) accomplished Gaelic poet, temp James II
Edward O’ Meagher Condon (1835-1915) was a Fenian; involved in the Manchester Raid in 1867, and condemned to death; this was commuted because of his American citizenship.
It seems there is not an active clan organisation for your name, at this time.
However, the revival of interest in Irish culture and heritage over the past 100 years has led to the revival of many Irish Clans. In more recent times, increased access to historical archives online, DNA testing and ease of travel to Ireland has led many individuals to explore their own genealogy and connections to Irish Clans. Some of these have gone on to establish Clan Associations in Ireland, the USA, the UK, Canada, Australia, New Zealand and anywhere that the Irish Diaspora has found itself.
Clans of Ireland Ltd invite those interested in Irish Clans to contact them with a view to explore the possibility of reviving your Irish Clan.