Bernard Tanguy (1992) :  Eccl. S.Maclovii de Bluscueli, mil. du XIIe s.; Blusweli, 1156; Brusvily, 1181; Blusivily, 1182; Blusivily, 1187; Bruscvily, 1407; Brusivili, 1440; Brusvilly, XVe s.; galloeg Brustao.