Question: Aurelia Plath was the grandmother of what biologist, who was the son of English poet Ted Hughes? 
Sentence (from "Aurelia Plath"): Aurelia Frances Plath (née Schober; April 26, 1906 – March 11, 1994) was the wife of Otto Emil Plath, the mother of the American poet Sylvia Plath, and her brother Warren, and the grandmother of Frieda Rebecca Hughes and Nicholas Farrar Hughes.
Relevant evidence: Yes