Meaning A girl's name of Celtic origin, it means "Serves God." Origin of Gildas Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Gildas Similar Names Bellicent Arlene Arte Mariel Senalda Gwendolen Gwendolyn Agnese Bedelia Rhienne Year by Year Popularity of Gildas