Although her original name was Takako, she changed her name from Takako to Amaneiko in February 877 because the Emperor Yozei ordered court ladies whose names were the same as his mother FUJIWARA no Takako to change names.
初名を高子といったが、元慶元(877年)2月に陽成天皇が母后藤原高子の名に触れる女官たちに改名を命じたため高子から洽子に改める。