Cumberland to Clerkenwell

Great to hear from Bridget again re assorted TURNBULL/GRAHAM snippets.
She kindly sent me both a photo of the Canonbie headstone of Robert & Helen TURNBULL, and the obit of my 2*great grandfather James TURNBULL, which had appeared in the Carlisle Patriot - and very fulsome it was too. (I've now remedied the oversight that he had missed being published on my web pages).
The obit completely confirms that I've correctly identified his brother John as the one married to Isabella MARTIN, as the copy of the "Huirangi papers" obit has an addenda: "Mr Turnbull was a native of Haithwaitegate near this city and brother of the late Mr John Turnbull of White Close Gate".
In addition Bridget sent a transcript of the death notice for Frances SCAIFE (nee GRAHAM) which confirmed my suspicion that she was the 1856 death registration in Penrith.
Fossicking around as a result of these I've now found the original of the marriage of Jane GRAHAM and John SCAIFE (parents of the above Frances' husband William SCAIFE) in St Bennet Grace Church, London, and see not only was the date different to that I had entered (15th March not Sep), but that the witnesses included a Jane BATY and Richard GRAHAM.
I assume the latter is her brother, but who is Jane BATY, presumably also so far from her Cumberland home?