Íomar of the Sogain is an obscure fifth or sixth century saint associated with Killimorsogan (Cill Íomar Soghain, or the church of Íomar of the Sogain), now the townlands of Killaghaun and Lisheen, north-east of Killamude, County Galway

County Galway

County Galway is a county in Ireland. It is located in the West Region and is also part of the province of Connacht. It is named after the city of Galway. Galway County Council is the local authority for the county. There are several strongly Irish-speaking areas in the west of the county...

. It was known by this name up to the eighteenth century.

There are two other similarly named churches in the diocese of Clonfert

Clonfert

Clonfert is a small village in east County Galway, Ireland. It is half way between Ballinasloe and Portumna.Clonfert Cathedral is situated in the village, which is the see of the Diocese of Clonfert.-See also:* List of towns and villages in Ireland...

, their relationship to this Íomar uncertain. The first is Cill Íomar (now Killimordaly

Killimordaly

Killimorbaby is a village and parish in County Galway, Ireland. It was originally located in Brian Burkes house Shkyboyhouse.-See also:* Íomar of the Sogain* List of towns and villages in Ireland-External links:*...

), which was also known as Cill Íomar Mhaonmhaige (the church of Íomar of Maenmagh) Maenmagh was later known as Trícha Máenmaige.

The second is Cill Íomar Bolg (the church of Íomar of the Fir Bolg), now Killimorbolg, five miles northwest of Portumna

Portumna

Portumna is a market town in the south-east of County Galway, Ireland, on the border with County Tipperary. The town is located to the west of the point where the River Shannon enters Lough Derg. This historic crossing point over the River Shannon between counties Tipperary and Galway has a long...

.

It is uncertain if these churches were founded by the one person, or if there were three people of the name, distinguished by three different descriptions.