I have found the following on IGI,
Thomas Mew and Mary Campbell, married 30/4/1814, had the following children in Lower Winchendon
William Mew born 21/11/1815 Bap 10/3/1816
Sarah Mew Bap 2/10/1819, & on 13/8/1838 married James Varney
Prisella Mew Born 20/4/1821 Bap 23/1/1823, married Joseph Munt 12/9/1844
Thomas Mew son of Thomas Mew married Caroline E Cooling 26/6/1847, but I have not found his birth date yet. Hope this is of some help