Trying to find James Kelly born 1793 Whitehaven he was a seaman/mariner married Elizabeth Stagg I have not been able to find his death.  Elizabeth was married to a seaman in the 1841 census and in the 1851 census says she is a widow.  I have found a James Kelly (married) who lost his life in a ship wreck in October 1846 ships name Brig Alert Captain Bowman Adamson at Fishguard.  Where can I look to find more information on this James Kelly.  As I cannot find his burial how can I find out if he is the James Kelly I am looking for.  I cannot find Elizabeth's death either or their son Joseph's death.  Your help would be appreciated.
Thank you in advance.