Erwan Vallerie ː Uuenran, 857; in plebe Keriac, 861; Uuerrann, 865; Uueran, 876; Uuenrann, Uuenran, XIt; Guarranda, Guerrandiae, 1070; Guarranda, 1095; Guerran, Guerrandia, 1112; Garranda, 1129; Guerrann, 1160; Guerrandia, 1194; Garrandia, Guenrandia, 1252; Guerrande, 1263; Guerrandia, Guenrandia, 1330; Guenrant, 1330; Guerrande, 1343; Guerrand, 1355; Gueriande, 1414; Garande, 1450; Garande, 1451; Guerandia, Guerrandia, 1453; Anguerrande,1479