[['district', 'vacator', 'reason for change', 'successor', 'date successor seated'], ['pennsylvania 4th', 'john a hanna (dr)', 'died july 23 , 1805', 'robert whitehill (dr)', 'seated november 7 , 1805'], ['georgia at - large', 'cowles mead (dr)', 'lost contested election december 24 , 1805', 'thomas spalding (dr)', 'seated december 24 , 1805'], ['georgia at - large', 'joseph bryan (dr)', 'resigned sometime in 1806', 'dennis smelt (dr)', 'september 1 , 1806'], ['georgia at - large', 'thomas spalding (dr)', 'resigned sometime in 1806', 'william w bibb (dr)', 'seated january 26 , 1807'], ['pennsylvania 1st', 'michael leib (dr)', 'resigned february 14 , 1806', 'john porter (dr)', 'seated december 8 , 1806'], ['maryland 7th', 'joseph h nicholson (dr)', 'resigned march 1 , 1806', 'edward lloyd (dr)', 'seated december 3 , 1806'], ['virginia 13th', 'christopher h clark (dr)', 'resigned july 1 , 1806', 'william a burwell (dr)', 'december 1 , 1806'], ['connecticut at - large', 'john cotton smith (f)', 'resigned sometime in august , 1806', 'theodore dwight (f)', 'december 1 , 1806'], ['pennsylvania 3rd', 'christian lower (dr)', 'resigned december 19 , 1806', 'vacant', 'not filled for remainder of term']]
3 vacators and Successor had John as their first name
3 vacators and [ENT] had [ENT] as their first name