The Society's College of Arms also registers and maintains SCA names, checking against duplication and ensuring at least minimal period authenticity. In some cases, names that were once acceptable (for example, Fiona) have been shown to be of modern origin and are no longer allowed. Though bearers whose names were approved before such research are not required to change them, no new submissions with names the heralds have documented as having come into use outside the SCA's period will be accepted.