Kametaka 【亀高】4 The Japanese surnames etymology dictionary.
Niigata-ken Tookamachi-shi . Distribution including killer. A variant of 吉良 . Iwate-ken In Morioka-shi , tell him that he was renamed to disguise Kira's last name near Niigata-ken Kashiwazaki-shi . Estimated in the Warring States Period. It was in Niigata-ken Tookamachi-shi during the Edo period. 吉良 reference.