However, in 711, Prince Katsuragi (later TACHIBANA no Moroe) who was a member of the Imperial family although his rank was Jugoinoge (Junior Fifth Rank, Lower Grade) was appointed as Meryogen (the chief of the Bureau of Horses) which was Ryoge no kan (class outside of the Ritsuryo system), from the viewpoint of military importance, and controlled the right and left divisions of Meryo.
しかし、711年に馬の軍事的な重要性から従五位下ながら皇族である葛木王（後の橘諸兄）が令外官である馬寮監（めりょうげん）に任じられて左右馬寮を統括した。