Leabhar (Mór) Leacain “The (Great) Book of Lecan” was written 1397-1418 in Middle Irish by the Gaelic poet-historian Giolla Íosa Mór Mac Firbhisigh for Ádhamh Ó Cuirnín. This section of the book contains details about the various branches of the people called the Uí Maine and their rights and obligations.
The noble kin-groups have the right to the hosting of all the Uí Maine men, from Caradh to Luimneach, on all expeditions into Leinster and into heroic Munster. These kin-groups are freed from the spring and autumn hostings and they cannot be summoned against their will. […] If a hosting into Connacht remains longer than a month and a fortnight, the Uí Maine have the right to return home.
The Clann Bresail are to keep the arms and clothing, and they are to respond to combat challenges coming from foreign territories on behalf of the Uí Maine. The kin-group of Crimthann Cael have the right to lead those who avenge insults made on the Uí Maine; they have the privilege to organize the battalions and to take the role of leader in the conflict. All warriors are to assemble around the Soghans, for they serve as the body of battle to all.