In the "Goshui Wakashu" (Later gleanings of Japanese poems) (poem No. 474) there is a piece of waka by Sagami (poet), which was dedicated to Yorikiyo when he was reassigned from the Governor of Mutsu Province to the Governor of Higo Province.
『後拾遺和歌集』（歌番号474）には、陸奥守から肥後守に転任する頼清に贈った相模(歌人)の和歌がある。