« Reply #10 on: Thursday 08 February 18 21:45 GMT (UK) »
The only name change like this in my tree was the consequence of a control freak's will, where the bequest was subject to continuing the name of the dead childless chap.
How...peculiar! I've nothing like it in my tree, which is why I was so confused when I came across this lot

Wales - Moses, Morgan, James, Williams, Thomas, Miles, Davies [South]
Isle of Man - Mylchreest, Kneale, Clague, Callister, Cowin, Oates, Kelly, Gelling, Cubbon, Comish, Gell, Harrison, Costain [South]
Scotland - Alexander, Johnston, Scotland, Muirhead, Dow, Forrest [Central]
Ireland - Alexander, Morrison, Gallaugher, McCrabb, Smyth [Ulster]
Canada - Alexander, Mylchreest [Manitoba, BC]
USA - Alexander [North/Northeast]