A Summary of the Incidence of Surnames Brennan, Corcoran, Coffey, Coffee, Coffy, Gahagan, Goaghan, Goghan, Gaughan, Geoghegan and Goggin in County Mayo and County Roscommon Griffith's Valuation

Surnames Brennan, Coffey, Corcoran and Gahagan are key surnames in my Irish Genealogical Research, they are the names of my third great grandparents. Michael Brennan and Biddy Coffey were listed as residents of County Roscommon and Patrick Corcoran and Mary Gahagan were listed as residents of County Mayo on their children's (Martin Brennan and Catherine Corcoran) marriage record so my research has just extended into County Roscommon.

I am nearing completion of my documentation of the Brennans and Corcorans in Griffith's Valuation. I will begin documenting the Coffeys and Gahagans in the same County Mayo records some time down the road as well as all four surnames in County Roscommon.

There are numerous variations of the four surnames Brennan, Corcoran, Coffee and Gahagan. I will be including all variations on my website in the Griffith's Valuation as well as church records. The following surname variations are found in the Griffith's Valuation for both County Mayo and County Roscommon: Brannan and Brennan in County Mayo and Brannan, Brannon and Brennan in County Roscommon; Corcoran and Corkeran in County Mayo and Corcoran in County Roscommon; Coffey in both County Mayo and County Roscommon; and Gahegan, Gahagan and Geoghegan in County Mayo and Gahagan and Geoghegan in County Roscommon. Many of the surnames and townlands in the Church records are spelled phonetically so you will encounter all sorts of variations. The surname Gaughan appears to be a different surname entirely and not a variant. There were three variations of this surname in County Mayo; Gaughan, Goaghan, and Goughan and none of the three versions were in County Roscommon.

The following table shows the presence of these four surnames (and their variations) in both County Mayo and County Roscommon Griffith's Valuation. A Civil Parish preceded by an "M" to indicate Mayo and "R" to indicate Roscommon. Keep in mind that Castlemore and portions of Kilcolman were transferred to County Roscommon in 1898, so records may be found in both counties.

Brennan, Brannan Coffey, Coffee, Coffy Corcoran, Cochrane Gahagan, Goaghan, Goghan, Gaughan, Geoghegan and Goggin
      (M)Achill (Gaughan)
(M)Addergoole   (M)Addergoole (M)Addergoole (Gaughan)
(M)Aghagower   (M)Aghagower (M)Aghagower (Geoghegan)
(M)Aghamore      
(M)Aglish (M)Aglish (Cochrane) (M)Aglish  
(M)Annagh      
(M)Ardagh      
      (M)Attymass (Gaughan and Goaghan)
    (M)Balla  
(M)Ballinrobe   (M)Ballinrobe (M)Ballinrobe (Goggin)
(M)Ballintober   (M)Ballintober  
(M)Ballyhean      
    (M)Ballynahaglish (M)Ballynahaglish (Gaughan)
(M)Ballysakeery      
(M)Bekan      
(M)Bohola   (M)Bohola  
    (M)Breaghwy  
(M)Burriscarra   (M)Burriscarra  
(M)Burrishoole   (M)Burrishoole (M)Burrishoole (Gaughan)
  (M)Castlemore (Coffey)   (M)Castlemore (Geoghegan)
(M)Cong     (C)Cong (Goggin)
    (M)Crossboyne (M)Crossboyne (Geoghegan)
    (M)Crossmolina (M)Crossmolina (Gaughan)
    (M)Doonfeeny (M)Doonfeeny (Goghan and Geoghegan)
(M)Drum      
(M)Islandeady   (M)Islandeady  
(M)Kilbeagh (Brennan and Brannan)      
(M)Kilbelfad   (M)Kilbelfad (M)Kilbelfad (Gaughan)
    (M)Kilbride  
(M)Kilcolman (M)Kilcolman (part of) (Coffey) (M)Kilcolman (M)Kilcolman (part of) (Gahagan and Geoghegan)
(M)Kilcommon   (M)Kilcommon (M)Kilcommon (Goghan and Gaughan)
(M)Kilconduff     (M)Kilconduff (Goggin)
    (M)Kilfian (M)Kilfian (Gaughan)
      (M)Kilgarvan (Gaughan)
(M)Kilgeever   (M)Kilgeever  
      (M)Killala (Gaughan)
(M)Killasser     (M)Killasser (Gaughan)
(M)Killedan      
    (M)Kilmaclasser  
      (M)Kilmainemore (Geoghegan and Goggin)
(M)Kilmeena      
(M)Kilmore   (M)Kilmore (M)Kilmore (Geoghegan and Gaughan)
(M)Kilmoremoy   (M)Kilmoremoy (M)Kilmoremoy (Gaughan)
(M)Kilmovee (Brennan, Brannan) (M)Kilmovee (Coffey)    
(M)Kilturra      
    (M)Lacken  
(M)Manulla      
    (M)Mayo  
(M)Meelick      
(M)Oughaval   (M)Oughaval (M)Oughaval (Gaughan)
    (M)Rathreagh  
    (M)Robeen  
(M)Rosslee      
(M)Tagheen      
    (M)Templemore  
      (M)Toomore (Gaughan)
(M)Touaghty   (M)Touaghty  
  (M)Turlough (Coffey) (M)Turlough  
(R)Ardcarn (Brennan and Brannan)   (R)Ardcarn (Corcoran)  
(R)Athleague (Brennan)   (R)Athleague (Corcoran)  
(R)Ballintober (Brennan)      
(R)Baslick(Brennan)   (R)Baslick (Corcoran)  
(R)Boyle (Brennan)   (R)Boyle (Corcoran)  
(R)Bumlin (Brennan)   (R)Bumlin (Corcoran)  
    (R)Cam (Corcoran)  
(R)Clooncraff (Brennan)     (R)Clooncraff (Goggin)
(R)Cloonfinlough (R)Cloonfinlough (Coffey) (R)Cloonfinlough (Corcoran) (R)Cloonfinlough (Geoghegan)
(R)Cloontuskert (Brennan)   (R)Cloontuskert (Corcoran) (R)Cloontuskert (Geoghegan)
(R)Cloonygormican (Brennan)      
  (R)Creagh (Coffey)    
(R)Creeve (Brennan)      
  (R)Drum (Coffey)   (R)Drum (Geoghegan)
(R)Elphin (Brennan)      
(R)Estersnow (Brennan)      
(R)Fuerty (Brennan and Brannan)     (R)Fuerty (Geoghegan)
(R)Kilbride (Brennan)   (R)Kilbride (Corcoran)  
(R)Kilbryan (Brennan)      
(R)Kilcolagh (Brennan)      
(R)Kilcolman (Brannan)   (R)Kilcolman (Corcoran)  
(R)Kilcooley (Brennan)      
(R)Kilcorkey (Brennan and Brannon)      
(R)Kilgefin (Brennan)   (R)Kilgefin (Corcoran) (R)Kilgefin (Geoghegan)
(R)Kilglass (Brennan) (R)Kilglass (Coffey)   (R)Kilglass (Geoghegan)
(R)Kilkeevin (Brennan) (R)Kilkeevin (Coffey) (R)Kilkeevin (Corcoran)  
(R)Killinvoy (Brennan) (R)Killinvoy (Coffey) (R)Killinvoy (Corcoran)  
(R)Killukin (Brennan)      
(R)Killummod (Brennan)      
(R)Kilmacumsy (Brennan)      
(R)Kilmeane (Brennan)   (R)Kilmeane (Corcoran and Cochrane)  
(R)Kilmore (Brennan)   (R)Kilmore (Corcoran)  
(R)Kilnamanagh (Brennan)      
(R)Kilronan (Brannan)      
(R)Kilteevan (Brennan) (R)Kilteevan (Coffey) (R)Kilteevan (Corcoran)  
(R)Kiltoom (Brennan)   (R)Kiltoom (Brennan)  
(R)Kiltrustan (Brennan)   (R)Kiltrustan (Corcoran)  
(R)Kiltullagh (Brennan and Brannon) (R)Kiltullagh (Coffey) (R)Kiltullagh (Corcoran)  
(R)Lissonuffy (Brennan) (R)Lissonuffy (Coffey) (R)Lissonuffy (Corcoran)  
  (R)Moore (Coffey)    
  (R)Ogulla (Coffey)    
(R)Rahara (Brennan)      
(R)Roscommon (Brennan) (R)Roscommon (Coffey) (R)Roscommon (Corcoran)  
(R)Shankill (Brennan)      
(R)St. John (Brennan) (R)St. John (Coffey)    
(R)St. Peter (Brennan) (R)St. Peter (Coffey) (R)St. Peter (Corcoran) (R)St. Peter (Geoghegan and Gahagan)
(R)Taghmaconnell (Brennan)      
(R)Taghboy (Brennan)      
(R)Termonbarry (Brennan)   (R)Termonbarry (Corcoran)  
(R)Tibohine (Brennan) (R)Tibohine (Coffey) (R)Tibohine (Corcoran) (R)Tibohine (Geoghegan)
(R)Tisrara (Brennan)      
(R)Tumna (Brennan)