Thanks for your explanation, and whilst I can certainly understand you not particularly wanting to send all that proof of ID (talk about red tape and unnecessary bureaucracy!) but I don't really understand needing to check with your cousin first, although that's your call.
For what it's worth, I really don't think its a different Stuart Scott - as well as the 1909 passenger list with both Stuart & Marion, we have we have a record showing Gerald Easton being Cousin to Eleanor O'Blenis (1930 census), a passenger list showing Gerald arriving in the US and going to his mother Mrs W Easton (9 Aug 1907), and a border crossing for record of Helen [Ellen/Eleanor] Scott daughter of Charles Scott of Warwick, Bermuda going to her Aunt, Mrs Wm Easton.
As I said, I do understand the annoyance at the excessive proof of ID requirements, but I think I'll bow out now as there's not much point in me spending time & effort finding leads that have to be 'approved' by someone else fist.