Jenny,
the Thomas Birch born with mmn GRICE was born in 1848, not 1850. The Thomas you are looking for must have been born at the earliest the very end of 1851 because his older brother William was born at the end of 1850. This may be just a case of a missing registration for Thomas . Have you looked for baptism?
Dave

The family are in Wilncote in 1851. Thomas isn't with them.

HO107 Piece 2013 Folio 351 Page 11

Caroline

Thanks to everyone who replied.

Mary died in June qtr 1853 in Tamworth Union district (Staffordshire).
I have FMP and can't find a baptism for Thomas. I thought he might have been registered under a different name but still can't find a child born within that time limit with mmn as ASHMORE!

Never mind, thanks for looking.

Jenny