Before Emperor Uda compiled "Shinsen Manyoshu" (anthology of Japanese poems), Imperial Prince Koresada selected poems for "Koresada Shinno-ke Utaawase" (Poetry contest sponsored by the family of Imperial Prince Koresada) which became the sources of Shinsen Manyoshu, under a commission from Emperor Uda.
宇多天皇が『新撰万葉集』を編纂に先立って、親王に託してその元となる『是貞親王家歌合』の撰定を行っている。