If you're ever in disagreement about a piece of lore, both of you can refer to this helpful chart:
Our House Lore > FR 3e/3.5e Sourcebook > FR 2e Sourcebook > Forgotten Realms Novel > Non-FR 3e/3.5e Sourcebook > Non-FR D&D Sourcebook > The Internet
At this table, sources on the left should be considered more important and correct when they come into conflict with sources on the right. We consider any Forgotten Realms sourcebook to be "canon," superseded only by our site's lore section. Anything to the right of FR 2e is "noncanon" but might be good inspiration.