Horse Girl Marriage - Uma Musume Konin

…It is true that many of the legendary places where famous horses were born are located near water. In addition, in the Kanto region and north, as sericulture spread, the story of the origin of the "horse girl marriage" came to be passed down, in which a horse fell in love with a rich man's daughter and they both died, and a silkworm was born from their corpses. This story comes from a rite recited by a shrine maiden who took part in the festival associated with the belief in Oshiragami as a silkworm god, and its origins can be traced back to China. …

*Some of the terminology that refers to "horse girl marriage" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…名馬が出たという伝説地は水辺にある場所が多いのは事実である。なお，関東以北では養蚕の伝播に伴って，長者の娘に馬が恋してともに死し，その死体からかいこが生じたという〈馬娘婚姻〉の由来譚を伝えている。これはかいこ神としてのおしら神信仰に伴って，その祭礼にあずかる巫女（みこ）の祭文に語られるところからきたもので，その源は中国からの伝来である。…

※「馬娘婚姻」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報