The taller man shooting the gun is the Rev. Hamilton Upcher, who was a Norfolk parson with the C of E. He was the “Parson Upcher” who hooked Winifred Charlesworth up with her first goldens. I don’t know his exact connection to the Marjoribanks or Fox-Strangways families, but he used his goldens to shoot in Norfolk, where he developed a reputation for being a very skilled marksman.
This particular dog is small and quite dark. These images come from an article on shooting in Country Life Illustrated from 24 August 1901.
I keep reading that as “Rev. Hamilton Upcher shooting one of his goldens.”
I don’t know of any connection between Rev. Upcher and either the Majoribanks or Ilchester families. Mrs. Charlesworth states in her book that it was through “Parson Upcher” that she acquired her original bitch, known as Normanby Beauty. But no connection has been found between Upcher and the other families. (in spite of diligent work by British historians).