An extent dated 1333 lists their territory as including the parishes of Kilconierin, Kiltullagh, Killimordaly, Grange, Killeenadeema, Lickerrig and Loughrea (the later including the parishes of Kilconickny, Kilteskill and Kilcooly).
The tuath was situated near the former parish of Kilconickny - "church of the Conmaicne".
In 801, the Annals of Ulster records the deaths of Cathrannach mac Cathal of Maenmag, and the anchorite Ninnid.
Fearghal mac Catharnach, Lord of Loch Riach, died 821/823.
Conchobar Maenmaige Ua Cellaigh, King of Uí Maine (died 1180) and his foster-son, Conchobar Maenmaige Ua Conchobair, King of Connacht (1186-1189) both spent their childhood in Máenmaige.