Jubei soba was named after the ferryman who drowned himself in Inbanuma subsequent to rowing the boat for the man of righteousness Sogo SAKURA by violating prohibition when Sakura went to Edo to make a direct plea to the Shogunate.
義民・佐倉宗吾が幕府へ直訴するために江戸へ向かう際、禁制を犯して渡し舟を出しその後印旛沼に身を投じた渡し守「甚兵衛」の名前を使った蕎麦。