 The person won't be charged a registration fee, may use the postnominal abbreviation "DBoS," may request at any time to cancel or change the registration, and must include proof of parentage for each generation, beginning with his or her own, so that the person named first in a generation was a child or relative of the couple named in the following generation.The group was founded in 2007 in Salt Lake City, home of the worldwide Family History Library, to encourage and provide resources to persons who are or suspect they are descendants and relatives of trials participants, or enjoy an interest in the trials.The current head of BLoS, as of October 2013, is Steven Hale.