Kanjū Katō (加藤 勘十 (Katō Kanjū), 25 February 1892 – 27 September 1978), also known as Kanju Kato, was a Japanese politician and labour activist of the Shōwa period. He served seven terms as a member of the House of Representatives for the Japan Socialist Party and was the second Minister of Labor. He was also known by the pen names Hekisui and Sotsu. A militant labour organizer active in the prewar period, he was nicknamed "Fireball Kanjū" (火の玉勘十, Hi no tama Kanjū). His elder brother was Chōichi Katō, a member of the House of Representatives for the Constitutional Democratic Party (Rikken Minseitō) and the National Alliance (Kokumin Dōmei). His wife was the women’s rights activist and politician Shidzue Katō; the couple were known as the "mandarin duck Diet members" (おしどり議員, oshidori giin). Their son was Nobuyuki Katō and their daughter was Taki Katō.
Source: “Kanjū Katō”, English Wikipedia (CC BY-SA 4.0), excerpt