Meaning A boy's name of Celtic origin, it means "Of Connaught." Origin of Lairgnen Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Lairgnen Similar Names Ailill Annan Artek Arth Artis Arty Atre Artturi Arto Adie Year by Year Popularity of Lairgnen