ollamains
Ollamains were a type of mercenary soldier prominent in medieval Ireland. The term is derived from the Old Irish word "ollam," which typically referred to a poet or scholar of the highest rank, suggesting a certain prestige or specialized knowledge associated with these fighters. Unlike some other mercenary groups, ollamains were not exclusively foreign but often comprised Irish warriors hired out to different Gaelic lordships or even to the Anglo-Norman lords who established themselves in Ireland.
Their exact role and composition are not always clearly defined in historical records, leading to some debate