Cassia O'Reilly (wanda aka sani da sana'a da Cosha kuma wacce aka fi sani da Bonzai ) mawaƙiya ce kuma marubuciyar waka ce ta Irish kuma mawaƙiyar kiɗa.
An haifi O'Reilly a Indiana, Amurka, kuma ta girma a Ireland, tsakanin County Wicklow da Dublin. Mahaifiyarta Ba’amurke Ba’amurke mawaƙiya ce kuma mahaifinta ɗan ƙasar Ireland kuma makadi ne. [1] Ta koma Landan tana shekara 17. [1]