Emperor Shirakawa
Watanabe no Den, great-grandson of Tsuna, received from Emperor Shirakawa (1053-1129) the hereditary title of Shokan (Governing officer) of the huge Oe no Mikuriya estate, and in Kyoto he inherited the military charges of Takiguchi no musha (Takiguchi warriors Guards of the Imperial Palace), as well as Emonfu (Government office of the Outer Palace Gate Guards) and Hyoefu (Administrative office of Middle Palace Guards).