Tokugawa Tsunashige was a son of Shogun [[Tokugawa Iemitsu]], and lord of [[Fuchu han|Fuchû han]] in [[Kai province]]. He became lord of the 350,000<ref>Hakuseki, 292n125.</ref> ''[[koku]]'' domain in [[1661]].
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Tokugawa Tsunashige was the second son of Shogun [[Tokugawa Iemitsu]], and lord of [[Kofu han|Kôfu han]] in [[Kai province]]. He became lord of the 350,000<ref>Hakuseki, 292n125.</ref> ''[[koku]]'' domain in [[1661]].
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His son Tokugawa Tsunatoyo (by his wife [[Ohora-no-kata]], aka Chôshôin) was adopted by Tsunashige's brother Shogun [[Tokugawa Tsunayoshi]] as his heir in [[1704]], and became shogun in [[1709]], taking the name [[Tokugawa Ienobu]].