Meaning A boy's name of Gaelic origin, it means "old and ancient." Origin of Senach Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Senach Similar Names Keanan Stiabhan Keondre Desmund Cian Peadar Bealantin Gille Mungan Raibeart Year by Year Popularity of Senach