The books were compiled by the nobility to establish their social status and confirm their privileges. Catherine the Great required the compilation of lineage books to qualify for membership in the local assembly of noble deputies established in 1785. A copy was sent into St. Petersburg to officially register the lineage. | The books were compiled by the nobility to establish their social status and confirm their privileges. Catherine the Great required the compilation of lineage books to qualify for membership in the local assembly of noble deputies established in 1785. A copy was sent into St. Petersburg to officially register the lineage. |