O Forranan - Frank
O Forranan. A Sept / Family branch, who had their territory in
Co. Donegal in the north - west of the Ulster Province where they were Chiefs.
Forrestall or Forestall. Anglo - Norman origins in Co. Kilkenny / Ossory in the south - west of Southern Leinster.
O Forrey. Used as a variant for O Farry, which see.
Forrest -
Forster -
Forsythe - fearsithe (man of peace) Scottish origins in Co. Antrim and Co. Down in the east of the Ulster Province. Also known there as Foursides.
Fortescue -
Forth / Fotharta. A Sept / Family branch, who had their territory in Co. Wexford in the south - east of Southern Leinster.
O Fortune or O Fortin or O Forty - Irish / Ua Foirtcheirin (overlord). A Sept / Family branch, who had their territory in Co. Carlow and Co. Wexford in the south of Southern Leinster. Used as a synonym in Co. Cork in Desmond / Southern Munster for Farshing, which see.
Fossit. See - Fawcett.
Foster or Forster -
Fottrell. English toponymic origins in Co. Dublin in the north - east of Southern Leinster since the 15th Century AD.
O Fouhy. See O Fuohy.
Foursides. See Forsythe.
Foudy. See Foody.
Fourhan. See Forhane.
Fowell -
Fowler. English origins in the Ulster Province since the confiscation of the 3,500,000 acres of the Heremonian Ui Cobhthaigh Dal Cuinn "northern" Ui Niaill territories and the foreign non - Catholic plantations there in 1609 AD. See also Fowloo.
Fowley. Used in Co. Leitrim in Northern Connacht for Foley, which see.
O Fowloo - Irish / Ua Foghladha. See O Foley. Also changed to Fowler, which see.
Mac / O Fox
of Teffia Co. Meath / Irish / Mheic / Ua an tSionnaigh. Heremonian Dal Cuinn "southern" Ui Niaill Cenel Main Muintir Tadcan / Tadhgain Sept / Family branch, which see, who were Chiefs in the Barony of Rathconrath and Clonlonan in Co. Westmeath in Teffia in Midhe in Northern Leinster descended from a son of 110.Teague an Sionnach the Chief of Teffia, and its use also gave rise to the names Mac Ashinna, Mac Shanaghy, Mac Shinny, Mac Shinnock, Mac Atinney, Mac Tinney and Mac Shannon. Sinnaigh the actual Fox was in reality Teige O Kearney / Tadhg Ua Catharnaigh, which see, in the 11th Century AD. The Family took over part of the territory in the Barony of Kilcoursey in Co. Offaly in the north - west of Southern Leinster where his descendants anglicized their name to Fox, but they still lost their land there during the Irish Uprising in 1641 - 42 AD. They were Chiefs also in Co. Longford nearby in the north - west of Northern Leinster. The Chief of the Family under Elizabeth 1st was Carbry Fox who received a large personal grant of land as Lord Kilcourcy, and died in 1639 AD who was married to Mary the daughter of Hugh / Aodh Mac Geoghagan of Castletown in Co. Westmeath, and was the father of Hubert Fox of Kilcourcy.Ancestors: *90. Niall - of the Nine Hostages the 126th King of Ireland the father of 91.Main the father of 92.Brian the father of 93.Breanan the father of 94.Aodh who had a brother 94.Criffan / Crimthann the ancestor of the O Breens, and was the father of 95.Bladhmach who had a brother 95.Aongus the ancestor of the of Loughnans / Loftus in Meath, and the father of 96.Congall the father of Colla the father of 98.Giolla Brighid the father of 99.Maol Beanachtach the father of 100.Tagan the ancestor of the Muintir Tagain and the father of 101.Beice who had 3 brothers, 101.Deighnan, 101.Gabhlach, and 101.Cearnachan who had 4 sons 102.Cibleachan the ancestor of the O Giblans / Ui Cibhleachain, 102.Cathal the ancestor of a Mac Quinn Sept, 102.Muireagan, 102.Cinleachan the direct male line ancestor of the O Kinlehans / Kinehans / Ui Cinleachain. 101.Beice was also the father of 102.Connor the father of 103.Breasal the father of 104.Cathiarnach the direct male line ancestor of the O Carneys / Ui Cathiarnaigh, and the father of 105.Cathalan the father of 106.Cathiarnach the father of 107.Rory the father of 108.Fogartach the father of 109.Rory the father of 110.Teague an Sionnach the direct male line ancestor of the Sionnachs / Foxes, Reynards, Reynardsons and Mac Seeny / Mac Sionnaigh, and the father of 111.Rory the father of 112.Niall the father of 113.Malachi the father of 114.Connor the father of 115.Rory Fox.
Fox. English origins in Co. Limerick in Thomond / Northern Munster.
O Foy. Especially see O Fee.
O Foylan - Irish / Ua Faoilean - faol (wolf). A Sept / Family branch, who had their territory at Foylanstown in Co. Westmeath in the south - west of Northern Leinster.
Foyle - fouille (excavation). French origins in Co. Dublin in the north - east of Southern Leinster since the 13th Century AD and later on they were nearby in Co. Laois in the mid - north - west of Southern Leinster.
Foynes. See Fyan.
O Fraher or O Farraher - Irish / Ua Fearchair / fear char (dear man). A Sept / Family branch, who had their territory in Co. Waterford in the south - east of the Munster Province. Raher was used as a synonym there.
O Frahill or O Fraul - Irish / Ua Freathail. A Sept / Family branch, who had their territory in the west of the Munster Province.
O Frahy. See O Frehy.
Frain or Frayne. Used for Freeney in Co. Roscommon in the east of the Connacht Province, and nearby in the north of Co. Mayo in the mid - west of Connacht. Also used for de Freyne.
Frame - frem / stranger. English origins in Co. Kilkenny in the south - west of Southern Leinster in 1577 AD, and later on were in the Ulster Province.
Francis / Le Franceis (the Frenchman) Norman origins -
Francis - Irish / Proinseis. They were near Galway City in Co. Galway in Southern Connacht.
Frank or Franks (the Frenchman, not a serf or villein). who had their Estates in Co. Laois and nearby in Co. Offaly in the north - west of Southern Leinster as Landed Gentry in the 17th Century AD, where Frankford was renamed back to Kilcormac.