Meaning and history
Kiyoko is a Japanese name formed from 清 (kiyo) meaning “clear, pure, clean” or 聖 (kiyo) meaning “holy,” combined with 子 (ko) meaning “child,” though it can also be written with other kanji combinations.
Kiyoko rose from #998 to #979 for girls between 1920 and 1921. That year also produced its highest recorded birth count, at 58.