Murtha is an ancient Irish name, derived from the word 'murchu', which means 'sea warrior'. It was originally a nickname given to someone who had the spirit of a warrior but hailed from a seaside region. The name Murtha has been used historically in Ireland and its diaspora communities around the world, with some notable figures bearing this name. In literature, there's a character called Murtha in Sean O'Casey's play 'The Plough and the Stars'.
The name Murtha had five instances of being given to newborns in the year 1918.