The Miyagawa family originated from Miyagawa Village, Azai County, Kohoku, Goshu.

During the Jokyo era (1684-1687) of the Edo period, Miyagawa Kohei Masakazu went to Kyoto and set up a residence in front of Chion-in Temple’s gate, where he sold and general pottery materials and yakitsugi (pottery restoration).

After Kohei Masakazu, the family split into the Jihei and Chobei families, and four generations later, the Chobei family produced Miyagawa Chozo, who was acclaimed as a master of Ninsei copying.

Meanwhile, the main Miyagawa Jihei family initially ran a ware shop in front of Chion-in Temple’s gate that ran a yakitugi-syo (pottery restoration shop) ceramic ware and glazes, but after moving to Gojozaka, it became extremely prosperous, and from the time of Koki Kosai in the Bunsei era, they began to make full-scale pottery, and exchanged techniques with Chozo’s kiln in Makuzugahara.
Since then, the Miyagawa family has inherited the Kōsai tradition for generations, and the fourth generation Eiyo Kōsai became a disciple of Tea Master Hanshoan Hisada Mutekisai Soya in 1929 (Showa 4), where he received instruction in the tea ceremony and began to fully devote himself to making tea utensils.
Around 1934 (Showa 9), he began to call himself Makuzu Kōsai, as he was related to the second generation Zenō Kōsai (Kumajiro) and Miyagawa Chozo and continued to work with them.
Currently, the Miyagawa family mainly produces tea utensils. They produce a wide range of products, including blue and white Gosu, Shonzui, Kochi, red-painted porcelain, Ninsei copies, Kenzan copies, and Nanban.