ツムギ・ヴェンダース

The real Tsumugi who was spirited away decades ago. She was friends with Hairi's grandmother.

Reasons for using katakana(ツムギ) instead of kanji in the name made in order to differ between real and main story Tsumugi. Also, main story Tsumugi, Hairi and other modern people refer to the real Tsumugi as Tsumugi-chan(ツムギちゃん) in order to prevent confusion.