The regulation was considered to be obeyed strictly since there was a traditional practice established whereby the first Prince who became nobility from Miyake was to become marquis (Marquis Kacho and so on), and after the second Prince, they started using count as a title (Count Higashifushimi and so on).
ある宮家から最初に華族となった王は侯爵（華頂侯爵など）とし、2人目以降は伯爵（東伏見伯爵など）とする、という慣行が定着していたほどであるから、準則は厳密に遵守されたと考えるのが妥当である。