HI, try locating their names in Censuses from the time period they were in orphanages. If unknown, then contact the New Orleans Catholic Archdiocese Archives Dept. they have records of Orphanages and Orphans. Another option is to look up an online Database called Records of the Disposition of Destitute Orphans 1852-1893...if they were orphaned within that time period. I hope this helps.