It is said that his instructor was Ichiami, Ido no Kami (a person who takes care of a well) in Samegai, who supplied ladles to Hideyoshi TOYOTOMI and was praised as being 'the best in the country.'
豊臣秀吉に柄杓を納めて「天下一」と称されていた一阿彌という醒ヶ井の井戸守が、正玄の柄杓づくりの師匠であったといわれる。