Simplify the following text for a Grade 10 native English-speaking person.
Original: John Nash ( Lambeth , 18 January 1752 â `` East Cowes Castle , 13 May 1835 ) was a British architect responsible for much of the layout of Regency London .
Simplified: John Nash ( Lambeth , 18 January 1752 â `` Isle of Wight , 13 May 1835 ) was a British architect responsible for much of the layout of Regency London .