Nut Flour

Rye with walnuts is pretty traditional.   Romans made bread with chestnut flour and planted chestnuts all over Europe when they had set up military posts and settlements a couple thousand years ago.  Most likely still making bread with chestnut flour or some portion of it.  Chilean Indians use pine nuts to make a bread.  Hickory nut flour?

Pecan nut flour would be nice.  Does peanut flour count?