Thanks to my 2nd cousins, Clive Dunham & Christine Wilson (nee Dunham) the information I have is as follows
William Henry Dunham (1830) married Elizabeth Miles. William Henry's occupation is given as Pattern Maker on the Wedding certificate of his son Benjamin.
Their children were:
Benjamin (1854)
Thomas (1857)
Henry (1860)
William Henry later married Hannah Husselby (Warwick 4q 1867)
They had a son
William (1869)
Benjamin (1854) married Mary Ann Esther Foley in 1875 at St Phillip's Birmingham.
Their children were:
Florence Maud Sophia (1876) (My paternal grandmother)
Alfred W (1878)
Gertrude Eve (1880)
Thomas Benjamin (1884 - 1940) .. the paternal grandfather of my cousins (above)
Frank Samuel (1895 - 1918) He was a RN Stoker 1st class, who died of pneumonia, while serving on on HMS Victory II on 26 October 1918, and is buried at Haslar RN Cemetery, Gosport. HMS Victory II was a tug on duties in Portsmouth harbour.
Florence Maud Sophia married George Henry Parkes, ( a widower) in 1900 and had 4 children, Alfred, Thomas Benjamin (my father), Rene (Catherine?) and Kathleen (Kate). Like her parents, Florence married at St. Philip's, Birmingham, and also, like them, both she and George Henry gave Bennets Hill as their address.