Question: Who is the father-in-law of Mary Cyrene Burch Breckinridge?
Sentence (from "Mary Cyrene Burch Breckinridge"): Mary Cyrene Burch Breckinridge (August 16, 1826 – October 8, 1907) was the wife of John C. Breckinridge and served as the Second Lady of the United States from March 4, 1857 until March 4, 1861, while her husband was the 14th Vice President of the United States.
Relevant evidence: Yes