In the Edo period, the Seshu-Shinno-ke was the name for the four princely houses that retained the title of Imperial Prince for generations by order of the Emperor regardless of their genealogical distance from the reigning Emperor.
江戸時代において、当今の天皇との血統の遠近に拘らず、代々親王宣下を受けることで親王の身位を保持し続けた四つの宮家をいう。