Meaning Of Celtic origin meaning 'forest or windy place'. Origin of Keith Celtic , Irish Popular Middle Names Anthony, Edward, James, Lamont, Michael, Robert, William, Allen, Alphonso, Amadeus Pronunciation 🔊 Listen Keith KEE-th Similar Names Xueyou Fonteyne Atrus Arturs Windgate Artie Artturi Galvyn Triston Tamunokuro Year by Year Popularity of Keith