I have a William Jacques b1805 which would be the right sort of age for your Amos's father. I have no more information on William himself.
His parents were Thomas b1786 and Hannah Mewkill b 1780.
He had siblings John b1808, Mary 1810-1851, Ann b1811, Charles b1815, Elizabeth 1817 - 1820, Thomas b1819, and Joseph b1822.
I'm descended from Charles. All children of Thomas b1786 were Leicester based.
David - (firstname.lastname@example.org