I'd like to join in this fascinating chat! I've been researching the Abbey family and the Russian connection. My research has mostly been based on Alexander Walter Abbey, a mining engineer who was murdered in Spain. There seem to be some common links with what you have all found, but here's my contribution, for comment etc. By the way, I looked on the OShea site, but found it very complicated.
Here's a bit more on the family.
I found a line back to a Mary Abbey, born in 1801. I can't find a spouse for her, but she had six children: Thomas 1828; John Henry 1830; Elizabeth 1834; Mary Ann 1836; Robert 1838 and Francis 1841.
All were born in Lockwood, Yorkshire with the exception of John Henry who was born in Selby.
He went to Russia!
He married - I'm not sure who - and had two sons: John William 1850 and Walter 1852. Both were born in Russia.
John William: again, I'm not sure who he married, but his five children were born in Russia. George 1888; Edward 1889; Elsie Emma 1890; Lucy Alice ?; Alexander Walter 1892 and Alfred Henry 1895.
It's interesting that they were all back in England in 1911.
More details on George:
George and Elizabeth went to Rhodesia and then to South Africa. They had two sons, Edward John Abbey 1917-1993 and Desmond 1920-1955.
Edward John had two children who are still living -Lynne Abbey and John Scotson Abbey, but I haven't any more on them at the moment.
Edward is a bit of a mystery (another one). He died in Brooklyn, New York. I can't find him anywhere, with the correct roots. The only Edward that keeps cropping up is a ship's steward sailing between Europe, South and North America and a variety of ships over the years.
Elsie Emma died in Sutton Coldfield in 1961, Lucy Alice in Maryland in 1976 and Alfred Henry in Exeter in 1971.
I hope that this will be interesting!