I found in the 1911 census a family including David Fairweather Guthrie, aged 3, born Ceylon. His mother was Emily Mary Guthrie née Shaw. His father wasn't with the family but Emily Mary Shaw married John Guthrie in 1902. I think this John Guthrie is probably the son of John Guthrie and Jane Parker Rickard, and if so he is my 5th cousin 3 times removed.
I'd love to exchange notes. I have reams of information about this Guthrie family.