Following Shinran's death, the lay Shin "monto" slowly spread through the Kantō and the northeastern seaboard. Shinran's descendants maintained themselves as caretakers of Shinran's gravesite and as Shin teachers, although they continued to be ordained in the Tendai School. Some of Shinran's disciples founded their own schools of Shin Buddhism, such as the Bukko-ji and Kosho-ji, in Kyoto. Early Shin Buddhism did not truly flourish until the time of Rennyo (1415–1499), who was 8th in descent from Shinran. Through his charisma and proselytizing, Shin Buddhism was able to amass a greater following and grow in strength. In the 16th-century, during the Sengoku period the political power of Honganji led to several conflicts between it and the warlord Oda Nobunaga, culminating in a ten-year conflict over the location of the Ishiyama Hongan-ji, which Nobunaga coveted because of its strategic value. So strong did the sect become that in 1602, through mandate of Shogun Tokugawa Ieyasu, the main temple Hongan-ji in Kyoto was broken off into two sects to curb its power. These two sects, the Nishi (Western) Honganji and the Higashi (Eastern) Honganji, exist separately to this day.