his life, Teika experimented with refining his style of ushin, teaching and writing it; in addition to his critical works and the manuscripts he studied and copied out, he experimented with the then-very young and immature form of renga – "They are an amusement to me in my dotage." He died in 1241, in Kyoto, and was buried at a Buddhist temple named "Shokokuji". Rival descendants One of his 27 children by various women (and one of two legitimate sons), Fujiwara no Tameie (1198–1275; he is remembered as a reluctant heir, in youth inclining rather to court football at the encouragement of Go-Toba than to poetry), would carry on Teika's poetic legacy. Tameie's descendants would split into three branches: the conservative elder Nijō branch (founded by Tameie's elder son, Nijō Tameuji (1222–1286); the middle branch of the Kyōgoku founded by Fujiwara no Tamenori (1226–1279), which, before it became extinct in 1332 with the death of Fujiwara no Tamekane, merged with the Reizei at the prompting of Nun Abutsu-ni; and the younger, more liberal Reizei branch, founded by Tameie' younger son Fujiwara no Tamesuke (b. 1263) by Abutsu (d. circa 1283; a poet and a great diarist, especially remembered for her diary Isayoi Nikki ("Diary of the Waning Moon") chronicling her legal battles to get the Kamakura shogunate to stop Tameuji from disinheriting Tamesuke of the Hosokawa estate near the capital that Tameie had left Tamesuke). It is a testament to Teika's importance that the poetic history of the next centuries is in large part a story of the battles between the rival branches; indeed, it is this rivalry that is chiefly responsible for the great number of forgeries attributed to Teika. When the Reizei lost a court case concerning possession of the Hosokawa estate Tameie had willed to Tamesuke, they were ordered to hand over the valuable manuscripts and documents inherited from Teika and Tameie over to the Nijō; they outwardly complied, but along with the few genuine documents whose existence the Nijō had already learned of, they mostly included forgeries which the Nijō had little choice but to accept. In retaliation, the Nijō manufactured a number of forgeries of their own, the better to buttress their claims.<ref name="buttress-texts">pg 25 of Brower 1972</ref> After a period of Reizei ascendancy under Reizei Tamehide (, great-grandson of Teika) (b. 1302?, d. 1372), they suffered a decline and a consequent rise in the