Birth act of Prince Leopold  of Belgium, Count of Hainaut (12th june 1859) laid under the authority of Burgomaster Charles Joseph Herry, Civil Record Officer of Laeken
Charles Joseph Herry, Bourgmestre de Laeken
État civil de Laeken, actes de naissance, <a rel="nofollow" class="external text" href="https://familysearch.org/ark:/61903/3:1:S3HY-XXC9-XLY?i=22&amp;wc=STLD-RM3%3A966956501%2C966964501&amp;cc=1482191">12 juin 1859</a> <small>(open a "familysearch.org" account to read the link)</small>.