Ihara Saikaku
A reference in a poem by Ihara Saikaku from 1680 describes the origami butterflies used during Shinto weddings to represent the bride and groom. Samurai warriors are known to have exchanged gifts adorned with noshi, a sort of good luck token made of folded strips of paper, which indicates that origami had become a significant aspect of Japanese ceremony by the Heian period (794–1185).