Try uploading your raw DNA to gedmatch and see what their admixture tests state. If you can test someone else in that line, it might be worthwhile.

You can have transplants who came with a spouse, appear to be one thing, but are in actuality another. You can have isolated communities which have different genetic stock... but Zero representation so close in your line, while plausible, seems like Monkey/Typewriter/War&Peace odds. You can also have an NPE / adoption or something similar.