benjamin harrison -lrb- 1726-1791 -rrb- of virginia was a stout man and when he took up the pen to sign the vellum copy of the declaration , he said to the slender elbridge gerry -lrb- 1744-1814 -rrb- of massachusetts : `` i shall have a great advantage over you , mr. gerry , when we are all hung for what we are now doing .