▁He ▁died ▁on ▁ 2 6 ▁September ▁ 1 8 1 5 . ▁He ▁was ▁a ▁Fellow ▁of ▁the ▁Royal ▁Society ▁and ▁of ▁the ▁Society ▁of ▁Anti qu aries ▁of ▁London . ▁A ▁monument ▁to ▁him ▁was ▁placed ▁in ▁the ▁church ▁of ▁Can ford ▁Mag na . ▁ ▁Family ▁ ▁Ad ye ▁married : ▁▁ ▁In ▁ 1 7 8 0 , ▁Catherine ▁Br oun cker ▁( d ied ▁ 1 7 9 8 ), ▁daughter ▁of ▁Henry ▁Br oun cker ▁of ▁St ▁K itt s ; ▁and ▁ ▁In ▁ 1 8 0 5 , ▁Frances ▁Wilson . ▁ ▁S ons ▁of ▁the ▁first ▁marriage ▁included ▁the ▁el dest , ▁John ▁Wille tt ▁Wille tt ▁Jr ., ▁( 1 7 8 4 – 1 8 3 9 ), ▁declared ▁a ▁lun atic , ▁and ▁Henry ▁Ralph ▁Wille tt , ▁a ▁bar r ister , ▁to ▁whom ▁the ▁estate ▁passed . ▁ ▁Notes ▁ ▁Category : 1 7 4 5 ▁birth s ▁Category : 1 8 1 5 ▁death s ▁Category : M embers ▁of ▁the ▁Parliament ▁of ▁Great ▁Britain ▁for ▁English ▁constitu encies ▁Category : M embers ▁of ▁the ▁Parliament ▁of ▁the ▁United ▁Kingdom ▁for ▁English ▁constitu encies ▁Category : F ell ows ▁of ▁the ▁Royal ▁Society ▁Category : F ell ows ▁of ▁the ▁Society ▁of ▁Anti qu aries ▁of ▁London ▁Category : B rit ish ▁MP s ▁ 1 7 9 6 – 1 8 0 0 ▁Category : UK ▁MP s ▁ 1 8 0 1 – 1 8 0