Meaning A girl's name of Gaelic origin, it means "Christian." Origin of Ciorstan Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Ciorstan Similar Names Ciorstag Ethne Silis Trina Aimil Diorbhall Eihhlin Giorsal Moibeal Sighle Year by Year Popularity of Ciorstan