Anyone still monitoring this. I may have some new info on this family. descendant of Mary South (1813-1880) married to Charles Walsham (1813-1859) here.
She remarried a soldier of the 14th foot James Mulinex/Molineaux(multiple variations) (1812-1882) returning from Depot duty in Ireland and moved to Birmingham with him, with most of her kids who were adopted as step children (See 1861 census -Alexander, Fanny, J. Robert) RG 9/2170/87 p33
I believe that Charles Walsham (1813-1858) her first husband was the son of Charles Walsham (1791-1852) & Susannah Wilson (1783).