Question: What is the date of death of Elizabeth Antonovna Of Brunswick's father?
Sentence (from "Elizabeth Antonovna of Brunswick"): Born after the deposition of her brother Ivan VI, she was kept imprisoned by Empress Elizabeth of Russia along with her family at Kholmogory, and in 1780, she and two brothers and a sister were placed under house arrest for the rest of their lives in Horsens.
Relevant evidence: No