district                    vacator        reason for change                 successor      date successor seated
0  massachusetts 10th       barker burnell ( w )      died june 15 , 1843     joseph grinnell ( w )   seated december 7 , 1843
1  georgia at - large         john b lamar ( d )  resigned july 29 , 1843  absalom h chappell ( w )    seated october 2 , 1843
2  georgia at - large          john millen ( d )   died october 15 , 1843     duncan l clinch ( w )  seated february 15 , 1844
3   pennsylvania 13th          henry frick ( w )      died march 1 , 1844       james pollock ( w )      seated april 5 , 1844
4           ohio 10th        heman a moore ( d )      died april 3 , 1844      alfred p stone ( d )    seated october 8 , 1844
5       louisiana 4th       pierre bossier ( d )     died april 24 , 1844       isaac e morse ( d )   seated december 2 , 1844
6           ohio 21st  henry r brinkerhoff ( d )     died april 30 , 1844     edward s hamlin ( w )    seated october 8 , 1844
7   pennsylvania 12th         almon h read ( d )       died june 3 , 1844       george fuller ( d )   seated december 2 , 1844

Table as JSON:
{"district":{"0":"massachusetts 10th","1":"georgia at - large","2":"georgia at - large","3":"pennsylvania 13th","4":"ohio 10th","5":"louisiana 4th","6":"ohio 21st","7":"pennsylvania 12th"},"vacator":{"0":"barker burnell ( w )","1":"john b lamar ( d )","2":"john millen ( d )","3":"henry frick ( w )","4":"heman a moore ( d )","5":"pierre bossier ( d )","6":"henry r brinkerhoff ( d )","7":"almon h read ( d )"},"reason for change":{"0":"died june 15 , 1843","1":"resigned july 29 , 1843","2":"died october 15 , 1843","3":"died march 1 , 1844","4":"died april 3 , 1844","5":"died april 24 , 1844","6":"died april 30 , 1844","7":"died june 3 , 1844"},"successor":{"0":"joseph grinnell ( w )","1":"absalom h chappell ( w )","2":"duncan l clinch ( w )","3":"james pollock ( w )","4":"alfred p stone ( d )","5":"isaac e morse ( d )","6":"edward s hamlin ( w )","7":"george fuller ( d )"},"date successor seated":{"0":"seated december 7 , 1843","1":"seated october 2 , 1843","2":"seated february 15 , 1844","3":"seated april 5 , 1844","4":"seated october 8 , 1844","5":"seated december 2 , 1844","6":"seated october 8 , 1844","7":"seated december 2 , 1844"}}