Simplify the following text for a Grade 11 native English-speaking person.
Original: In 1870 , this changed with the publication of the first significant Austen biography , A Memoir of Jane Austen , which was written by Jane Austen 's nephew , James Edward Austen-Leigh .
Simplified: In 1870 the first important Austen biography , A Memoir of Jane Austen , was written by Jane Austen 's nephew , James Edward Austen-Leigh and printed .