there are several references involving the same people --the one you refer to is in actual tranfer to John Jadwin 23 November 1658 which was assigned to him by Wm. Thompson.
"150 acres near land granted said Sharp & lately in possesion of Wm. Thompson
Next "500 acres granted to Randolph Chamlett 22 November 1654 and by him sold to said John Jadwin 150 acres granted to said Sharp by himm assigned to Wm thompson who assigned to said Jadwin"---thus it confirms the above date of 23 Nov. 1658