According to the IGI there are 2 more children born to a Thomas Hyde and Mary,St Michales, Ashton. another Sarah ch.16.7.1820 and a Cyrus ch. 23.2.1823
I have found Cyrus in 1851 married and in 1841 with his mother Mary, no mentioned of Thomas, so he may well be deceased by then, I was hoping to find him to see if it would give us any clues to his birth.

1841 HO107/532/12/18/19/33 Mary's aged 58 making her born c 1782/3
1851 HO107/2231/184/18 Cyrus is aged 29 making him born c 1821/2