I think the Joseph CURRALL whose will is in question is the one who died 3 October 1908 in England, 
CURRALL Joseph, of Laurel Grove, Sheldon Warwickshire and of Icknield Port Road, Birmingham, contractor, died 3 Oct 1908 at Laurel Grove.  Probate Birmingham 25 November  to John Joseph HACKETT secretary and director of Currall Lewis and Martin Ltd and to Edward Henry LEE solicitor.  Effects 34078 pounds.
John Joseph HACKETT  and Edward Henry LEE are the people mentioned as contesting the will.
regards,
   Ros