Muirchertach mac Maelruanaidh Mor was the second king of

Moylurg {{Use dmy dates, date=April 2022 Magh Luirg or Magh Luirg an Dagda, Anglicised as Moylurg, was the name of a medieval Irish kingdom located in modern-day County Roscommon, Ireland. It was a sub-kingdom of the kingdom of Connacht from c. 956–1585 ...

, but is very obscure; not even the dates of his reign are known. He was succeeded by his son Tadhg.

References

* "Mac Dermot of Moylurg: The Story of a Connacht Family", Dermot Mac Dermot, 1996. * http://www.macdermot.com/ Connachta 11th-century Irish monarchs People from County Roscommon MacDermot family {{Ireland-royal-stub