Ogasawara Sadayasu

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  • Died: 1856/8/9
  • Other Names: 益之助 (Masunosuke)
  • Japanese: 小笠原 貞寧 (Ogasawara Sadayasu)

Ogasawara Sadayasu was a Bakumatsu period lord of Chizuka han, a branch domain of Kokura han, from 1854 to 1856.

He succeeded his brother Ogasawara Tadahiro as lord of Chizuka in 1854 when Tadahiro became heir to the lord of Kokura domain.[1]

Sadayasu then retired two years later, on 1856/6/6 in favor of his adopted heir, Ogasawara Sadamasa. Sadayasu died two months later, on 1856/8/9.[2]

Preceded by
Ogasawara Tadahiro
Lord of Chizuka han
Succeeded by
Ogasawara Sadamasa


  1. Ishin Shiryô Kôyô 維新史料綱要, vol 1 (1937), 310, 612.
  2. Ishin Shiryô Kôyô 維新史料綱要, vol 2 (1937), 202.