Meaning A boy's name of Welsh origin, it means "From Elian's home Origin of Trevelyan Welsh +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Trevelyan Similar Names Powell Pwyll Trevelian Talyessin Timotheus Twm Aneirin Siarl Mihangel Padrig Year by Year Popularity of Trevelyan