Aurelia Plath was the grandmother of what biologist, who was the son of English poet Ted Hughes? 
Nicholas Farrar Hughes
Title: The Bell Jar
Passage: The Bell Jar is the only novel written by the American writer and poet Sylvia Plath.  Originally published under the pseudonym "Victoria Lucas" in 1963, the novel is semi-autobiographical, with the names of places and people changed.  The book is often regarded as a "roman à clef" since the protagonist's descent into mental illness parallels Plath's own experiences with what may have been clinical depression.  Plath died by suicide a month after its first UK publication.  The novel was published under Plath's name for the first time in 1967 and was not published in the United States until 1971, in accordance with the wishes of both Plath's husband, Ted Hughes, and her mother.  The novel has been translated into nearly a dozen languages.  The novel, though dark, is often read in high school English classes.
Title: Aurelia Plath
Passage: 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.
Title: Nicholas Hughes
Passage: Nicholas Farrar Hughes (January 17, 1962 – March 16, 2009) was a fisheries biologist known as an expert in stream salmonid ecology.  Hughes was the son of the American poet Sylvia Plath and English poet Ted Hughes and the younger brother of artist and poet Frieda Hughes.  He and his sister were well known to the public through the media when he was a small child, especially after the well-publicized suicide of his mother.  Hughes held dual British/American citizenship.
Aurelia Plath Nicholas Hughes