Simplify the following text for a Grade 6 native English-speaking person.
Original: Henry VII ( ; 28 January 1457 -- 21 April 1509 ) was King of England and Lord of Ireland from his seizing the crown on 22 August 1485 until his death on 21 April 1509 , as the first monarch of the House of Tudor .
Simplified: Henry the VII or Henry Tudor ( 28 January 1457 â `` 21 April 1509 ) was king of England from 1485 to 1509 .