Mac Inerney - Irish / Mheic an Airchinnigh - airchinneach / Erenagh (Descended from a son of the Erenagh) One of the principal Heberian Dal gCais Ui Caisin Septs / Family branches, who had their territory in Co. Clare, Co. Tipperary and Co. Limerick in Thomond / Tuaisceart Mhumhain / Northern Munster. They were the Kings of Corca Muirceadha / Conaill Uachtrach and are descended initially from *92.Caisin who is also the ancestor of the Siol Aodha Sept that includes the Mac Namaras, O Gradys, Mac Clancys, O Meehans, O Caisins and many other Dalcassian Septs. Mac Kinnerk is also used as a synonym, which was almost sounded as Mac Inerkney. Ancestors - *92.Caisin, *91.Cas (Dal gCais) the King of Thomond, *85.Cormac "Cass" the 2nd King of Munster, *84.Alill "Oluimm" the 1st King of Munster. Definition of an Erenagh: By the 11th Century the Abbot in the churches was known as the Comharba / Co - Arb who was the heir of the Saintly founder / or, if this church was not the Saint’s main institution, the Airchinnech / Erenagh / head, who had become the lay Lord. His Family then held the office and the church property from generation to generation. Generally the Comharba or Airchinnech maintained a priest.

Mac Inerney. A Heberian Dal gCais Ui Bloid Ui Turlough Sept / Family branch,  who had their original territory in the east of Co. Clare in the north - west of the Munster Province. Ancestors - *105.Duncan / Donncuan, *104.Kennedy / Ceaneidigh, *103.Lorcan / Finghin, *102.Lachtna, *101.Corc, *100.Anluan, *99.Mahon, *98.Turlough (Ui Turlough), *97.Cathal, *96.Aodh "Caomh" the King of Munster, *95.Conall, *94.Eochy / Eochaidh "Baill Dearg," *93.Cairthenn "Fionn  Oge Mor," *92.Blood / Blod - *91.Cas (Dal gCais) the King of Thomond.  

Mac Inerney - Irish / Mheic an Airchinnigh - airchinneach / Erenagh. An Erenagh Sept / Family branch, who had their territory at Elphin in Co. Roscommon in the east of the Connacht Province where their name was often anglicized as Mac Nerney, which see.

Ingram. They were in Co. Limerick in the mid - north - west of the Munster Province in the 17th Century AD and fought on both sides during the troubles in Ireland and are now mainly found in the Ulster Province.

Mac Innes. Gaelic / Mheic Aonghuis. A Highland Scottish form of Mac Guinness. Angus and Anguish are also cognate with it.

Mac Inoulty or Mac Inulty - Irish / Mheic Inulty. Used as variations for Mac Nulty, which see, in Co. Clare in the north - west of the Munster Province.

Mac Inteer. Used as a variation for Mac Ateer, which see, in the Heremonian Ui Cobhthaigh Dal Cuinn Ui Briuin kingdom of Breifne in Co. Leitrim in Northern Connacht.

Mac Intyre. Highland Scottish name. Also used by the Mac Ateers, which see who were a Sept  Family branch, who had their territory in Co. Donegal/ in the north - west of the Ulster Provinces and were Chiefs in Co. Tyrone in Central Ulster.

Mac Ire - Irish / Mheic Ire. A Sept / Family branch, who had their territory in Co. Cork in Southern Munster.

Ireland or Irland. They originated in England from early emigrants from Ireland known then as de Irlande (of Ireland) whose descendants returned as strangers. Now numerous in Co. Armagh and Co. Antrim in the east of the Ulster Province.

Irish. Similar origins to Ireland, which see, and was in use in Co. Kilkenny in the south - west of Southern Leinster.

Irvine or Ervine. Scottish toponymic origins. Irving was used in Scotland. Also confused with Irwin, which is of different origin. They were in the Ulster Province in the 17^th Century AD after the Confiscation of the 3,500,000 acres of the Heremonian Ui Cobhthaigh Dal Cuinn "Northern" Ui Niaill territories there and the Foreign non - Catholic Plantations there and it is seldom found outside of there. Now numerous in Co. Fermanagh in the south - west of Ulster and the surrounding regions.

Irwin or Erwin - Irish / Ua hEireambhoin. Actually O Hirwen who were a Sept / Family branch, who had their territory in Co. Offaly in the north - west of Southern Leinster.

Irwin or Erwin / Eoforwine / boar friend. English origins. Planter stock they were initially in the Ulster Province and in Co. Roscommon in the east of the Connacht Province. Also used as a synonym for Irvine there.

Mac Iver or Mac Ivor - Irish / Mheic Iomhair / Eimher / Heber. A Heremonian Ui Cobhthaigh Dal Cuinn Colla da Crioch Sept / Family branch who were a Sept of the Mac Mahons, who had their territory in part of their kingdom of Orghialla / Oriel in Co. Monaghan in Southern Ulster. Especially see - Mac Keever.

O and Mac Ivers. See - Mac Ivor / Mheic Iomhair, and was occasionally used also by the Sept of the Ui hIomhair. See - Howard and Evers.

Ivis. Used in England for St. Ivers but in Ireland used as a variation for Ivers.

Mac Iwee. See - Mac Kelvey - Irish / Mheic Giolla Bhuidhe (Descended from a son of the yellow - haired youth.)