
Senior councilor who suppressed the Shimabara Rebellion.
Nobutsuna was appointed to the powerful position of roju under Shogun Tokugawa Iemitsu. This role made him one of the highest-ranking officials in the Tokugawa shogunate, responsible for major policy decisions and military command.
As a senior councilor, Matsudaira Nobutsuna commanded shogunate forces in the siege of Hara Castle, crushing the Christian-led peasant uprising. The rebellion's suppression led to the finalization of Japan's national seclusion policy and the persecution of Christians.
During the severe Kan'ei famine, Nobutsuna implemented relief measures including rice distribution and tax reductions in domains under his control. His actions mitigated some suffering but the famine still caused widespread death across Japan.