The 1938 certificate has arrived. It is definitely the same couple as the 1897 marriage. This is the wording (with names altered for the privacy of still living relatives):
Marriage solemnized at the Register Office, Sometown
When Married: Twenty Fifth August 1938
Name and Surname: Guy Henderson, previously known as John Harold Barker
Age: 68 years
Condition: The divorced husband of Margaret Barker, formerly Green, widow
Rank or Profession: Coal Miner
Residence at the time of Marriage:80 Acacia Avenue, Sometown
Father's Name and Surname: marked with a dash
Rank or Profession of Father: marked with a dash
Name and Surname: Mary Ann Talbot, otherwise Henderson
Age: 65 years
Condition: Spinster
Rank or Profession: marked with a dash
Residence at the time of marriage: 80 Acacia Avenue, Sometown
Father's Name and Surname: George Thomas Talbot
Rank or Profession of Father: Farm Labourer
The 1897 marriage:
Marriage solemnized at the Register Office, Anothertown
When Married: Ninth June 1897
Name and Surname: John Harold Barker
Age: 28 years
Condition: Bachelor
Rank or Profession: Gunner RMA
Residence at the time of Marriage: West Barracks, Anothertown
Father's Name and Surname: John Barker (deceased)
Rank or Profession of Father: Civil Engineer
Name and Surname: Mary Ann Talbot
Age: 25 years
Condition: Spinster
Rank or Profession: marked with a dash
Residence at the time of Marriage: Dockside Road, Anothertown
Father's Name and Surname: Thomas Talbot
Rank or Profession of Father: Farm Bailiff
I was able to follow 'Mary Ann Talbot' back and I couldn't find a previous marriage for her. Her father is 'George Thomas Talbot' but he does use 'Thomas Talbot' on some census entries.
I've found nothing so far in newspapers, Marriage & Divorce on Ancestry or in the J77 series at TNA to indicate that the 1897 marriage ever came to light.
I'm thinking at the moment that our man knew that wife 1 had divorced him but possibly he was not aware of her death in 1937. Otherwise why not give "Widower" as his condition? Why did he not give details of his father on the 1938 marriage? I think his father's details on the 1897 one were fudged and his actual father is an 'Edward Barker', lead miner. He did have a stepfather 'John Smith'.
Such a tangle! Thanks for reading.
Tony.