Simplify the following text for a Grade 6 native English-speaking person.
Original: Tokugawa Yoshimune ( å 3\/4 å å å -- Tokugawa Yoshimune , November 27 , 1684 - July 12 , 1751 ) was a shogun of Japan .
Simplified: Tokugawa Yoshimune was born in 1684 in the rich region of Kii , a region which was then ruled by his father , Tokugawa Mitsusada . Yoshimune 's childhood name was Tokugawa Genroku .