Arthur Diosy was born in London in 1856. His father Martin was a Hungarian patriot who escaped to England when the revolution failed in 1849.
Arthur had a great interest in Japan from his childhood, therefore he studied Japanese language and things Japanese by himself. He proposed the establishment of a society for the encouragement of Japanese studies in September of 1891. The inaugugural meeting of the Japan Society was held in April 1892, when he was nominated as honorary secretary and later became vice-chairman.
He lectured about Japan many times all over the country and published a book “The New Far East” in 1898 which won great success. The following year he visited Japan with his wife for the first time, and received a great welcome from many Japanese people during their four-month-stay.
He served as a chairman of the Japan Society from 1901 to 1904 and then became vice-president. He welcomed all of the royalties and eminent people of Japan who visited England with warmest hospitality until his death in 1923.