In 1797 he assumed by Royal licence the surname of Duckett in lieu of Jackson according to the will of Grace 's uncle , Thomas Duckett .
He married as his second wife Grace Duckett , daughter of George Duckett .
In 1797 he assumed by Royal licence the surname of daughter in lieu of Jackson according to the will of Grace 's uncle , Thomas Duckett .
He married as his second wife Grace Duckett , daughter of George Duckett .