I had named the character Ian in an earlier draft. Changed the name. (If you want to know why, please read about it on Spoilerville.) Apparently, one slipped through despite several people reading through several other drafts.
In other words, I made a mistake. I know, I know... but really, happens all the time.
Sorry for any confusion, and especially for yanking some of you out of the story and irritating you more than I would have believed possible.