Roscommon comes from the Irish Ros meaning a wooded, gentle height and Comán, the first abbot and bishop of Roscommon who founded the first monastery there in 550 AD.

Rathcroghan (Irish: Ráth Cruachan, meaning "fort of Cruachan") is a complex of archaeological sites near Tulsk in County Roscommon. It is one of the six Royal Sites of Ireland.

It is identified as the site of Cruachan, the traditional capital of the Connachta, a term used to describe the prehistoric and early historic rulers of the western territory.

Rathcroghan is known as the home of Queen Medb  (Maeve) and was the seat of Kings of Connacht and then of the High Kings of Ireland.

This was the starting point of the Táin Bó Cúailnge, or Cattle Raid of Cooley, an epic tale in Irish mythology.

The north of the county was part of the Moylurg kingdom that covered an area of…