Question: are ciel and elizabeth cousins?
Answer: Lady Elizabeth Midford (エリザベス・ミッドフォード, Erizabesu Middofōdo) is the daughter of Alexis Leon and Francis Midford, younger sister of Edward Midford, niece of Vincent Phantomhive and Rachel Phantomhive, and the cousin and fiancée of Ciel Phantomhive.