Murchadh Ó Cuindlis

italic=unset was an Irish scribe of the Ó Cuindlis family of brehons and scholars. Other renderings of his name have italic=unset or italic=unset, and sometimes italic=unset.
He was said to be a native of Bally Lough Deacker. italic=unset was one of the scribes of the Leabhar Mór Leacáin, 1397–1418, under the guidance of Giolla Íosa Mor mac Donnchadh MacFhirbhisigh. He was later the scribe of An Leabhar Breac at Duniry, 1408–1411; it is the largest Irish-language vellum manuscript attributed to a single scribe. He is also credited with a third work, c. 1400, known as An Leabhar Ruadh Muimhneach or An Leabhar Ruadh, a genealogical work from which material was copied in 1621 by Mícheál Ó Cléirigh at Quin Friary, possibly examined in the 1630s by Antonius Bruodinus at the library of Moynoe, and last seen on 30 June 1634 at a convent in Thomond. It is not to be confused with the much later An Leabhar Muimhneach or various other manuscripts called Red Book.