Thank you this. I was aware of most of that, but not the (very important) marriage details -- and they indicate that William was a widower, so that is very interesting and a new path to follow!!
MS 58/1/20 record at Bham archives discusses a re-assigned mortgage redemtion and makes reference to John and Edwin Wright, Ann Wright (widow) and Wm Alston of Elmdon Hall. Properties on DArtmouth St, Lister St, Heneage St, ad Brewery St. This was at the time of building the Millwall investment I think.