Hi,
I do not know where Helen's first husband by the surname of "Power" came from. I can not make a connection in the UK, Scotland, Wales or Ireland. I have searched the Argentina web sites available and checked on Ancestry.com for Canada and the US and still can't find them. The first record I have is a steamship journey from River Plate, Argentine for Helen Power. The second entry I have is when she married my adopted father in 1917 at Pancras, London and then when she subsequently traveled to and fro the Argentine with him. The gentleman may well have come from the U.S. I don't know that's why the posting. At the same time I am not saying that that is where he does come from.
Kindest regards