was a samurai commander in
Azuchi-Momoyama period and
Edo period
The or is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's 300 regional '' daimyo''. Emerging from the chaos of the Sengoku period, the Edo period was characte ...
.
His father was
Kutsuki Harutsuna (朽木 晴綱). The Kutsuki were a powerful clan at Kutsuki-tani (朽木谷), Takasima-gori,
Ōmi Province
was a province of Japan, which today comprises Shiga Prefecture. It was one of the provinces that made up the Tōsandō circuit. Its nickname is . Under the '' Engishiki'' classification system, Ōmi was ranked as one of the 13 "great countr ...
. His childhood name was Takewakamaru (竹若丸.
At the age of two, Mototsuna succeeded when his father died in battle. At first, he served an
Ashikaga shogunate
The , also known as the , was the feudal military government of Japan during the Muromachi period from 1336 to 1573.Nussbaum, Louis-Frédéric. (2005)"''Muromachi-jidai''"in ''Japan Encyclopedia'', p. 669.
The Ashikaga shogunate was establi ...
at the
Hokosyu. In 1570, Mototsuna helped
Oda Nobunaga when he attacked
Asakura clan
The is a Japanese kin group. Papinot, Jacques Edmond Joseph. (1906). ''Dictionnaire d'histoire et de géographie du Japon''; Papinot, (2003).html" ;"title="DF 7 of 80">"Asakura", ''Nobiliare du Japon'', p. 3 DF_7_of_80">"Asa_...
_and_retired_through_Kutsuki._He_then_served_Toyotomi_Hideyoshi.html" ;"title="DF 7 of 80/nowiki>">DF 7 of 80">"Asa ...
and retired through Kutsuki. He then served Toyotomi Hideyoshi">Hashiba Hideyoshi after Nobunga died in 1582.
In 1600 at the Battle of Sekigahara, at the start Mototsuna took part in Ishida Mitsunari's force belonging to Otani Yoshitsugu. However, acting in concert with Kobayakawa Hideaki, Mototsuna, along with Wakisaka Yasuharu,
, betrayed Mitsunari. After the battle, Ieyasu let Yasuharu govern his domain because of this exploit.
* Mother: Asukai Masatsuna's daughter
* Wife: Gyōe's daughter
* Children:
** Kutsuki Nobutsuna (1582-1662)
** Kutsuki Tomotsuna (1599-1662)
** Kutsuki Tanetsuna (1605-1660)
** daughter married Hori Naomasa