I was filling out the "About Guardian" page at above left. There wasn't much information to add that hadn't been included somewhere else on the blog, so I had the idea to copy some of his "real" origin.
At first, my plan was to include quotes from John Byrne that appeared in the Guardian Eaglemoss magazine. In order to flesh it out some, I started searching for similar interview excerpts.
As you can now see on the page in question, I was able to access parts of Modern Masters #7. This was a bit of a stroke of luck, because being a Google books preview only, many pages were deliberately skipped. But the one I would have ripped right out of the book given the choice was readily available.
On that page, Byrne mentions that he drew "bad samples" when asked to display his skills for a Captain America story set to take place in Canada. In the story, Cap was to fight a Canadian superhero that, we now know, would later become Guardian.
Other versions of Guardian's true origin usually ignore the Captain America aspect. They do make reference to sending a Canadian superhero to bring back Wolverine, of course. That this superhero is one that Byrne dreamed up many years before is often mentioned, but that Guardian-to-be might have appeared in a Captain America book beforehand tends to be left out.
By complete fluke though, I stumbled into what appears to be a copy of one page of those samples.
I do recall Byrne stating that "badly coloured" pages of that sample artwork were still owned by someone. It seemed like a harsh assessment but, well, I can kind of see how he reached that opinion.
