Doris's ?first husband Harry Ronald Youle dies in 1957 in Northamptonshire and in 1958 Administration is granted to his widow - Doris Gertrude Youle.
Doris dies in 1959 and Administration is awarded to George T Coombes.
George dies in 1961 and probate granted to Westminster Bank.
1965 Administration is revoked re Doris's probate/will and awarded to her son Harry Ronald.
Coincidentally in 1965 (on the same page that shows Administration has been revoked re Doris's will) there is an entry for Harry Ronald Youle - died 1957 Northamptonshire - Administration has now been awarded to Harry Ronald Youle, and advising "Former Grant P.R 13th May 1958".
Now the following is purely speculation on my part but I am guessing Harry Youle and Doris never divorced, neither did George T Coombes and his wife Clara Osborne.
So Doris and George lived together as man and wife until their deaths.
Their son Harry R Youle may have been upset that his father had left his estate to Doris, who in turn left her estate to George, so perhaps Harry (junior) decided to challenge both his father and mothers wills rather than his fathers estate ultimately being left to George T Coombes.
Fay