Year of birth unknown - 1600

In the family name, Ootani and the name is Yoshitsugu.

The Japanese calls Ootani Yoshitsugu.

When the Ieyasu Tokugawa subjugation was told from Mitsunari Ishida, though he stopped it with a rash plan, he supported Mitsunari Ishida in answer to Mitsunari's favor and he was defeated to the Tokugawa army.