Simplify the following text for a Grade 5 native English-speaking person.
Original: His mother was Maria Hoes Van Buren , the granddaughter of a Dutch immigrant .157 Martin Van Buren went to school at the Kinderhook Academy in the village where he lived .
Simplified: He died while Martin Van Buren was a New York state senator . Martin Van Buren 's mother was Maria Hoes ( nÃ e Van Alen ) Van Buren ( 1747 â `` 1818 ) .