McManus anglicises the Gaelic Mac Maghnusa, "son of Maghnus" — Maghnus being the Gaelic form of the Norse name Magnus. The family emerged as a sept of the Maguire lordship of County Fermanagh, seated on an island in Lough Erne, and a fifteenth-century chief of the name, Cathal Óg Mac Maghnusa, was the principal compiler of the Annals of Ulster, one of the most important surviving chronicles of medieval Irish history.
The Gaelic form and regional setting are the useful starting points for research, since a modern surname can represent more than one historic line.
The McManus collection currently includes garden flag, mug, woven blanket, T-shirt, novelty license plate, coaster set, and ceramic ornament. The woven blanket is the most substantial home piece where available. Designs use the McManus name and crest; where Irish National Tartan appears, it is a shared Irish heritage background rather than a hereditary family tartan.
For the fuller surname history and regional context, read our McManus Irish surname history.