Simplify the following text for a Grade 7 native English-speaking person.
Original: Willem Wissing , also known as William Wissing ( 1656 , Amsterdam or The Hague - 10 Sep 1687 Burghley House ) , was a Dutch portrait artist .
Simplified: Willem Wissing , also known as William Wissing ( 1656 - 10 September 1687 ) , was a Dutch portrait artist .