A quick look-see on Calico Hardwood’s website lists “French Walnut” as one of their offerings. Although I didn’t read the description on their website, I seem to recall it’s grown in CA for their inventory. I would guess, technically, that’s what is found on many Repro’s including Roger’s stock, and mine that is shown on pg 15 (ie: post 146). I always refer to it as ’English’ but maybe that’s wrong??
http://www.calicohardwoods.com/