The Japanese term , from Portuguese cristão (cf. Kristang), meaning "Christian", referred to Catholic Christians in Japanese and is used in Japanese texts as a historiographic term for Catholics in Japan in the 16th and 17th centuries. Modern Japanese has several words for "Christian", of which the most common are the noun form キリスト教徒, and also クリスチャン. The Japanese word キリシタン is used primarily in Japanese texts for the early history of Roman Catholicism in Japan, or in relation to Kakure Kirishitan, hidden Christians. However, English sources on histories of Japan generally use the term "Christian" without distinction. Christian missionaries were known as (from the Portuguese word padre, "father" or "priest") or (from the Portuguese irmão, "brother"). Both the transcriptions 切支丹 and 鬼利死丹 came into use during the Edo Period when Christianity was a forbidden religion. Portuguese ships began arriving in Japan in 1543, with Catholic missionary activities in Japan beginning in earnest around 1549, mainly by Portuguese-sponsored Jesuits until Spanish-sponsored mendicant orders, such as the Franciscans and Dominicans, gained access to Japan. Of the 95 Jesuits who worked in Japan up to 1600, 57 were Portuguese, 20 were Spaniards and 18 Italian. Francis Xavier, Cosme de Torres (a Jesuit priest), and João Fernandes were the first to arrive to Kagoshima with hopes to bring Christianity and Catholicism to Japan. At its height, Japan is estimated to have had around 300,000 Christians. Catholicism was subsequently repressed in several parts of the country and ceased to exist publicly in the 17th century. History Background Line of demarcations between Portugal and Spain Religion was an integral part of the state and evangelization was seen as having both secular and spiritual benefits for both Portugal and Spain. Indeed, Pope Alexander VI's Bulls of Donation (1493) commanded the Catholic Monarchs to take such steps. Wherever Spain and Portugal attempted to expand their territories or influence, missionaries would soon follow. By the Treaty of Tordesillas (1494), the two powers divided the world between them into exclusive spheres of influence, trade and colonization. Although, at the time of the demarcation, neither nation had any direct contact with Japan, that nation fell into the sphere of the Portuguese. The countries disputed the allocation of Japan. Since neither could colonize it, the exclusive right to propagate Christianity in Japan meant the exclusive right to trade with Japan. Portuguese-sponsored Jesuits under Alessandro Valignano took the lead in proselytizing in