Years ago I invented a name for a kingdom/country in my YA fantasy novel, which I am on the verge of self-publishing. At random, I discovered a self-published author had the same invented name for her kingdom; only the spelling differed by one letter.
I really don’t want to change my kingdom’s name, but I also don’t want to face anything legal. Is this considered copyright infringement, or is it okay to move forward with publishing my book as is?
Thank you in advance for any help/advice anyone has to offer.