Great work Debbie! I have trawled through the marriage indexes for the marriage of Thomas and Elizabeth, to no avail, also
www.staffordshirebmd.org.uk have the marriage indexes for St Michaels, Stone indexed for the years 1837-1969 and I cannot find them on there neither. I tried looking for Emma's birth reg (c1845/6), under all three surnames, but again nothing! I did come across a reg for a Emma Stretch marrying in 1870 at Stone. So if Thomas and Elizabeth did ever marry, it looks like their first two children were born out of wedlock!
I have looked on the 1841 census and these were the only Whittingham's I have found so far, but they could be likely candidates for Thomas's parents and siblings:
Mill Lane, Stone (H0107-0993, folio 13/49, page 21)James Whittingham, 45, Carter, (all family born in county)
Ann " , 40
George " , 20 Shoe M
Ann " , 15
Mary " , 10
William " , 8
I have yet to find Joseph Stretch and family, their names must be mistranscribed, I will have another 'bash' later.