Question: Who is Abra Prentice Wilkin's paternal grandmother?
Sentence (from "John Rockefeller Prentice"): John Rockefeller Prentice (December 17, 1902 – June 13, 1972) was born to Chicago lawyer Ezra Parmalee Prentice and Alta Rockefeller Prentice in New York.
Relevant evidence: Yes