Thank you Roger. I see that on the next page there is a posting by the other Roger Banfield that specifically mentions the Weeks connections, so I will place the information there.
Something of a long shot but I wonder if, by reason of occupation, there is a link between the Devon/Scilly Isles family and the other Roger's Somerset ancestors. My forebears were farmers around the area of the Somerset coalfield, but George Weeks my g/g/g uncle and the father of Ann Banfield was the son-in-law of a sea pilot from Pill on the banks of the Bristol Avon, traditionally the home of the Bristol Channel pilots. Ann's brother John drowned off Lundy Island on 2 October 1846.
As the Bristol Channel pilots amazingly used to row through the world's 2nd fastest tide as far out as Lundy to meet ships, the assumption must be that the children were brought up in a sea-faring rather than agricultural environment and this may be how Ann met her husband.