John Goodman Maxwell had a grandson named John Goodman Maxwellm the eldest son of John's youngest son, Charles kingsley Maxwell.  The latter was lost over the side of a steamer in 1900. His son JGM married Mary Jane Cox in 1905. They had at least two daughters, Lily Maud Mary Maxwell born 1907 and Molly Emily Jane Maxwell born in 1914.  They also appear to have had a son Richard John Maxwell who may have married in 1935 to a Miss Dorothy Maycock. Lily M.M. Maxwell married Alan Taylor in April 1939 and Molly E.J. Maxwell married Maurice Sheppard a couple of months earlier. The Sheppards had a son Charles Maxwell Sheppard in in 1941 and a son Simon Sheppard in 1946. I am very keen to trace any member of the above families.