Meaning A boy's name of Welsh origin, it means "Legendary son of Baeddan Origin of Maelwys Welsh Popular Middle Names Pronunciation 🔊 Listen Maelwys Similar Names Madawc Mallolwch Mawrth Medyr Meilyg Mordwywr Morthwyl Myrddin Olwydd Albanwr Year by Year Popularity of Maelwys