I believe that Jeanne registered her marriage under the name of Mary Dorman.

Henry can be seen in the 1901 census living with his parents and siblings at Bere Regis, Dorset.

Tom Stroud 44 Dorset Berc Regis Dorset Melcombe Regis Gardener
Emily Stroud 37 Dorset Berc Regis Dorset Melcombe Regis �
Henry Stroud 19 Dorset Berc Regis Dorset Melcombe Regis Railway Engine Stoker
Lucy Stroud 10 Dorset Upwey Dorset Melcombe Regis �
William Stroud 7 Dorset Upwey Dorset Melcombe Regis �
Ethel Stroud 4 Dorset Preston Dorset Melcombe Regis �
Frederick Stroud 1 Dorset Broadwey Dorset Melcombe Regis �

It is quite probably Henry's parents who can be seen at Bere Regis in 1881 living at Heath Warren, Bere Regis, Dorset:
Thomas STROUD Head M Male 24 Bere Regis, Dorset, England Ag Lab
Emily E. STROUD Wife M Female 18 East Lulworth, Dorset, England Ag Lab Wife
Jane PITCHER Visitor M Female 29 Bere Regis, Dorset, England Dressmaker
Fredrick J. PITCHER Visitor Male 5 Portsmouth Scholar

I understand from Roy Stroud, the great-grandson of Tom and Emily, that Emily died in 1958 aged 94 years. Tom apparently died in his 40's. It's only in recent years that Roy has realised that his great-grandmother was living when he married in 1953, and also when his older daughter Deborah was born in 1956.

Little is known of Jeanne Dorman. I am told by her grandson, Roy Stroud, that she was French and he was told that she left home and came to England to live. Her home is believed to have been at Deauville in France, and her brother is believed to have been a Jockey there.
However, Jeanne is visible in the 1901 census, aged 18 and living at Yarlington, Somerset, working as a General Servant. It appears from the census that she was born in Cherbourg, France:
Jeanne Dorman 18 Cherbourg France Somerset Yarlington General Servant

I suspect this photo was taken in about 1925/6. The back row, left to right, is Harold George Knibbs, Winifred Amy Knibbs and their mother Evelyn Knibbs. Jeanne Dorman is the lady in the middle of the front row. In 2004, the photograph was shown to Tom Stroud (then aged 89, one of Jeanne's sons), and he confirmed that the lady at the right of the front row was his grand-mother, Jeanne's mother-in-law, Emily Stroud. She would have been aged about 62 years when the photograph was taken. Tom tells us that the younger lady to the left of the front row is one of Emly Stroud's daughters. I have it that there were two daughters, Lucy and Ethel. Lucy would have been 34 years old and Ethel 25 when the photo was taken so I suspect it was Ethel.

We are not quite sure what occasion would have brought the Knibbs and Stroud families together at this time. Evelyn Knibbs' daughter Phillys married Jeanne Stroud's (nee Dorman) son Alexander in September 1928 at Basingstoke, Hampshire, and the couple settled in Weymouth, Dorset, England. Harold at the back row was born November 1913. He is in school uniform so clearly the photo was taken pre-1928 and therefore before the marriage.

As the gathering clearly took place before Alexander and Phillys were married, I can only assume it was to introduce the Knibbs and Stroud families when the couple announced their engagement.

David Stroud has a daughter Hazel Luxford who lies in the Southampton area.