The noble assembly of each province was tasked with maintaining an official register of all resident nobles (as opposed to a register of all nobles who owned land in the province, which was another story altogether). The register (rodoslovnaia kniga) was updated annually, as individuals petitioned for inscription and were either confirmed as members or denied noble status by the assembly.
This project draws on the noble registers produced in the years 1804 to 1853, 1804 being the first official register for Tavrida.