Unless you are writing a series of short stories for publication about that orphan, that’s a non sequitur.
The lived experiences of the hypothetical orphan aren’t any more material to discussions on Lore and Canon as pertaining to literature than the D&D stats of a longsword are to this one’s ability to use Fiore and Lichtenauer’s techniques to cut an assailant to gobs.
But this one will bite as they now feel memories unbidden resurfacing.
Incoming textwall, flee while thou mayest.
To create Lore or Canon for a literary system, one must first start with an Author, who will be the primary Authority. They establish what is and isn’t true in the story they tell. If that story spans numerous installations, or they choose to use the setting they created for numerous stories, the systems that are constant are the rules of that setting. That which is authored by the authority become canon. As more and more detail is added to the setting or characters, the body of lore grows.
Now, if that author allows others to collaborate, the body grows even more, if it is done with care, it all fits reasonably together. If not, you get Ysalamiri and the Yuzhaan Vong or other such head scratchers.
Regardless, still lore. Still, by ascent of the authority, canon.
Now, if the author transfers authority, it may become tricky. Did they transfer in good faith? Or was it stolen or misappropriated? If the transfer of authority is clean, the new authors hold authority and continue to build both canon and lore. If the line of succession is dubious, even if others create material for the setting or characters, it may not be regarded as lore (depending on how well it fits with the established precedent of the previous authority) and most likely will not be considered canon. It will often be given all the gravity of fanfiction.
There will be disagreement between purists and legalists on this matter.
In the event that authority is completely transfered, what is considered canon can be completely revoked (but this does imperil the loyalty of the fanbase), even rewritten. Which will create schisms. If the new authority is sagacious, they will either honour the whole of the existing body, or use great care when pruning.
But even with great care, once the story has changed authors numerous times, it is in real peril of losing it’s identity, which will further the schisms in the fandom.
This leaves us with plural and distinct collections that might be considered canon.
Now, in the case of this game, the lore is ultimately the decision of Funcom. However, they have made it clear they value the original authority above all others. Therefore it can be taken that the original REH texts are the canon and their contents are the lore. Funcom may choose to add to them, but if they don’t want to create another schism, they would do well not to contradict themselves, and they really should not remove from the body they have already acknowledged. When we as the fandom ruminate and speculate as to what is lore, we can either appeal to existing cannon, or use that cannon to interpret what we see from a body that claims to act with consistency in regards to it.
Also, you owe this one a drink or meal for dredging up the memories of a semester of Literary Law/Publication Practices and Standards, ayesh, what a banal span that was.