Table: 15th united states congress
[['district', 'vacator', 'reason for change', 'successor', 'date successor seated'], ['connecticut at - large', 'uriel holmes (f)', 'resigned sometime in 1818', 'sylvester gilbert (dr)', 'seated november 16 , 1818'], ['north carolina 11th', 'daniel forney (dr)', 'resigned sometime in 1818', 'william davidson (f)', 'seated december 2 , 1818'], ['massachusetts 20th', 'albion k parris (dr', 'resigned february 3 , 1818', 'enoch lincoln (dr)', 'seated november 4 , 1818'], ['virginia 19th', 'peterson goodwyn (dr)', 'died february 21 , 1818', 'john pegram (dr)', 'seated april 21 , 1818'], ['louisiana at - large', 'thomas b robertson (dr)', 'resigned april 20 , 1818', 'thomas butler (dr)', 'seated november 16 , 1818'], ['pennsylvania 4th', 'jacob spangler (dr)', 'resigned april 20 , 1818', 'jacob hostetter (dr)', 'seated november 16 , 1818'], ['pennsylvania 6th', 'samuel d ingham (dr)', 'resigned july 6 , 1818', 'samuel moore (dr)', 'seated october 13 , 1818']]
Statement: all seat but 1 were vacated due to resignation
Statement: Albion K Parris has the earliest known resignation date of the listed vacators
Statement: Virginia 19th has the shortest gap between a member of Congress vacating their seat and their Successor being Seated
Statement: William Davidson is the only federalist Successor
Statement: Thomas B Robertson and Jacob Spangler Resigned on the same date