Twins Related

Emmy Harries
Emmy is their little sister. She once showed up at Jack's younow broadcast and she also in a couple of Jack's and Finn's keek

Eliza Daisy Frayn
Eliza is their cousin, she showed up at Jack's Music Monday videos with Jack and often on their younow broadcast. She also has a youtube channel called elizaplaystheguitars

(might be adding some soon)