Furui 【古井】5 The Japanese surnames etymology dictionary.
Mie-ken , Aichi-ken . Thing . From various doors. Mie-ken Kuwana-gun Kisosaki-chou Kato is home based. Mie - ken Kuwana - shi Mie - ken Kuwana - shi It is served to the castle owner of Nagashima castle which was on the west exterior side of Nagashima Town, and tells that he was celebrating that they gathered doors and defended themselves when the enemy attacked. Estimated in the Warring States Period.