According to 'Kanni Osadame' issued in 1750 by the Retired Emperor Sakuramachi and Kaneyoshi ICHIJO, the Oshinokoji family and the Mibu family were allowed to rise to Jusanmi (Junior Third Rank), but members of the Hirata family could be appointed Jushiinojo (Junior Fourth Rank, Upper Grade) at the age of seventy or older, being not allowed to rise to Shoshiinoge (Senior Fourth Rank, Lower Grade) unless special services were recognized in particular.
桜町上皇と一条兼香が定めた寛延3年（1750年）の「官位御定」では、押小路家・壬生家が従三位に昇ることが可能であったのに対して、平田家は従四位上叙任を70歳以上とし、特別な功労がない限りは正四位下には昇進できないとしている。