References

 SURNAME DICTIONARY: Brennan / Brannon Ireland VIEW SOURCE
GENETIC ORIGINS: MacBrannon Ireland VIEW SOURCE
STRONGHOLD MAP: Brennan / Brannon Ireland
FLAXGROWERS 1797: Brennan Co. Roscommon Ireland VIEW SOURCE
TITHES (Pre-Famine): Brennan / Brannon Ireland VIEW SOURCE
GRIFFITHS (Post-Famine): Brennan Ireland VIEW SOURCE
CENSUS 1901: Brennan, Co. Roscommon Ireland VIEW SOURCE
CENSUS 1911: Brennan, Co. Roscommon Ireland VIEW SOURCE
HEADSTONES: Brennan, Co. Roscommon Ireland VIEW SOURCE
Brannon BRENNAN1000

Brannon Mac Branáin 1000

Elphin (Roscommon) Creeve (Roscommon) Killukin Boyle (Roscommon) Killummod (Roscommon) Ardcarn (Roscommon) Boyle (Roscommon) St Johns (Roscommon) Kilcolagh (Roscommon) Kilmacumsy (Roscommon) Kilnamanagh (Roscommon) Shankill (Roscommon) Athleague (Roscommon) Kilronan (Roscommon) Estersnow (Roscommon) Kilmore (Roscommon) Tumna (Roscommon) Killinvoy (Roscommon) Fuerty (Roscommon) Kilmeane (Roscommon) Rahara (Roscommon) Tisrara (Roscommon) Cloontuskert (Roscommon) Kilbride (Roscommon) Kilgefin (Roscommon) Kilteevan (Roscommon) Roscommon (Roscommon) Termonbarry (Roscommon) Bumlin (Roscommon) Clooncraff (Roscommon) Cloonfinlough (Roscommon) Kilcooley (Roscommon) Kiltrustan (Roscommon) Lissonuffy (Roscommon) Ballintober (Roscommon) Kilcorkey (Roscommon) Tibohine (Roscommon) Baslick (Roscommon)
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Place of migration
Stayed in Ireland

Brennan / Brannon ancestors from County Roscommon?  

You are in good company ...

Mac Branáin aka Brannon / Brennan  (lit. son of branán) is the name of a great Roscommonmon family, chiefs of Corca Achlann near Elphin. Mac Branáin is now generally, but not quite correctly, Anglicised Brennan. 

  • According to MacLysaght, the present day Brennan of Roscommon, Sligo, Mayo and Leitrim were nearly all originally MacBranan. Galway Brennans probably also originated as MacBranan in Roscommon.

18th and 19th-Century transcribers often recorded a Co. Roscommon Brannon as Brennan / Brannan/ Branon / Branan /McBrannan/ MacBrannan.

To discover more (or contribute) link in with the Brennan stronghold parishes listed above and ... or ... post a message below! 

FIND Brennan Ancestors in our database: https://irelandxo.com/ireland-xo/history-and-genealogy/ancestor-databas…

Additional Information
Date of Birth 1st Jan 1000 (circa)
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