The Ijûin were descended from [[Shimazu Tadatoki]]. They served the [[Shimazu clan|Shimazu]] throughout the [[Sengoku Period]] although their reputation declined owing to scandals involving members of the family at the dawn of the [[Edo Period]].
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The Ijûin were descended from [[Shimazu Tadatoki]]. They served the [[Shimazu clan|Shimazu]] throughout the [[Sengoku period]], and though [[Ijuin Tadamune|Ijûin Tadamune]] and his son [[Ijuin Tadazane|Tadazane]] faced some scandals in the 1590s-1600s, the clan continued to enjoy prominent positions within the Shimazu house or [[Satsuma han]] (such as the position of ''[[karo|karô]]'') through the course of the [[Edo period]].