Mary Brittle, the sister of William, Henry & Harriet was born in 1824 (not 1814) and would possibly have been christened at St Martins, are there any records? Parents Joseph & Elizabeth Brittle.
I also have a query regarding Joseph's siblings... this is the possible family group but do they all have the same details on their records?
1779 April 19 CHARLES BRETTELL married MARY COTTRELL at St Martin, Birmingham and had the following children: (to be confirmed)
SARAH BRETTLE Christened 14 July 1782 at Harborne, Staffordshire
JAMES BRETTLE Christened 20 Oct. 1782 at Harborne, Staffordshire
ANN BRITTLE Christened 1 Oct. 1789 at St Phillips, Birmingham
JOSEPH BRITTLE Christened 1 Oct. 1789 St Phillips, Birmingham
CHARLOTTE BRITTLE Christened 30 Sept. 1791 St Phillips, Birmingham
MARY ANN BRITTLE Christened 4 March 1793 St Phillips, Birmingham
CHARLES BRITTLE Christened 26 Jan. 1795 St Phillips, Birmingham
THOMAS CHARLES BRITTLE Christened 26 Dec. 1803 St Phillips, Birmingham