Meaning Sheamus is a boys name of Celtic origin, it means one who supplants. Origin of Sheamus Celtic , Irish Popular Middle Names Arthur, Thomas Pronunciation 🔊 Listen Sheamus Sh-ay-m-u-s Similar Names Sholto Atrus Arturs Artie Artturi Dallan Bodicca Arzhur Aty Arthek Year by Year Popularity of Sheamus