Simplify the following text for a Grade 8 native English-speaking person.
Original: Cassandra Elizabeth Austen ( 9 January 1773 â `` 22 March 1845 ) was an amateur English watercolourist and the elder sister of Jane Austen .
Simplified: Cassandra Elizabeth Austen ( 9 January 1773 â `` 22 March 1845 ) was the older sister of Jane Austen .