Name, year of marriage, from the “Devis Family Tree” kindly shared by Julie Bourke (nee McColl) received in the post on 3 May 2017. This information is based on original research, including that of Wills, by Linda Burge and Julie Bourke.

Margaret Sweeney in an Ancestry message dated 11 October 2017 writes, “I have been delving into Henry Devis' France connection and his association with John Gamble (who married Henry's sister [Elizabeth Devis] in 1803) and have come across the following website,
https://www.gracesguide.co.uk/John_Gamble
John Gamble is an interesting man in his own right, but it was the fact that he gave the name Pitt as a middle name to one of his sons that makes me believe that the association with William Pitt is true and along with the story on the web link above which gives details about the French connection I am more convinced. John Gamble also named one of his sons Bryan Donkin Gamble which I thought a bit peculiar so I thought I would research the name Donkin and that is what led me to the web link”.

Margaret Sweeney is the x3-great granddaughter of Sidney Bell Devis (b.1816). Brian of nzolivers.com is a x3-great grandson of Emma Frances Devis (b.1814), sister of Sidney Bell Devis.

Margaret in a subsequent Ancestry message dated 29 October 2017 writes, “I have been spending a lot of time researching the Gamble side of the family and am very surprised at how much they influenced the way we live now, in England”.
“John Gamble, although English, was the brother in law of Saint Leger Didot who was from a family of paper mill owners in Essonne in Paris France. One of Saint Legers employees drew up plans for a paper making machine that would produce paper in a roll rather than just small sheets, as had been the only method up until then. Saint Leger purchased the patent off of the employee and handed the drawings to John Gamble in 1801 to bring to England where upon he patented the machine in England and recruited the Fourdinier family to finance the construction of the machine and engineer Bryan Donkin (who became famed in his own right later in life) and John Hall a paper mill owner to modify the drawings and build the machines, this partnership was called Donkin, Hall and Gamble. They had great success with that enterprise, and then went on to be the first company in England to produce tinned food in another enterprise. The factory that they had was quite near to where I live, although the site is a school car park now, but there is a plaque on the wall of the school keepers house denoting the fact that the famed factory stood there”.

Year and place of birth, year of death from the hand-drawn “Gamble Pedigree” tree received from Caroline Swart (nee Wilken) in an email dated 23 May 2018. Caroline is a x3-great granddaughter of Elizabeth Devis (b.1777). Brian of nzolivers.com is a x4-great grandson of Elizabeth’s brother, Henry Devis (b.1778).
Tree states John Gamble was of Blue Anchor Road, Bermonset, London.