Can this be a connection to my unknown grandfather?

I will be checking out the DNA Arthur's siblings to see if one of them could be the culprit.

 

There are other surnames in Christopher’s tree to follow up on too, not just the Websters. Or, from the matches you share with him, does it look like the Websters are the most likely link between them?

 

I agree, but you do need to be a little bit careful here. One of my DNA matches is the granddaughter of my 3rd cousin, so 2 generations below me, but she is only 14 years my junior and went to school with her grandmother's first cousins.

 

Instead of having just Unknown listed as my paternal grandfather, I changed it to Unknown Webster and today have found someone more possible. One of Christopher's great uncles was not living in Norfolk in either 1901 or 1911 but in Walthamstow. I Googled it compared to Woodford, where my grandmother was sent to work and they appear to be quite close. This uncle was born in 1867, which is why I did not look further last month, but today I looked at his family. He had many children but two sons were of the same age as Anne, my grandmother. Twins born in 1889 and one in 1891, the same year as Anne. One twin died during WW1 and the other in 1919 so nothing further on them, at least no little leaves beside their names. Also, once I added Webster to the Unknown I got a common ancestor match to C.W., listing Unknown as my paternal grandfather, and both his father and the uncle with the same father. Not knowing which of the twins or the other son was probably my grandfather, I will have to just leave it as Unknown, but I can add his father to my tree.