Disclaimer: I am intensly cranked out about such things. My apology as first line of defense is that denial can be a form of sorrow, but I refuse to believe I were in denial. I frequently do get things mixed up, and I may be gullable, and I believe it generalizes that most people are. So what might appear as history revisionism is really only the outflow of weariness about the same. Also, I tend not to read up because of lack of interest paired with distrust.

tl;dr.: Atahualpa was taken to Spain on his own wishes, for having done a great job, what ever job this may have been. The rest of your account may well be a folk believe. Elvis is alive!