As far as we know all the children of Anton and Hannah Americanized their surname to be Jorgenson (with an o). We will gladly change to Jorgensen on request of the individual descendant of Anton and Hannah or their children's request.
As shown on his tombstone (added July 4, 2017) Uncle Anton kept the Jorgensen spelling, unlike some of his siblings who eschewed the Norwegian, as did many many pioneers.