I see languages with few speakers in the list and yet welsh isnt an option?
It seems that a lot of people here are american and so many will have welsh ancestry. Before Englands concerted efforts it was very widely spoken and any welsh ancenstors pre 1900 will have spoken it.
Its very disheartening to select "Other" for most of my family.
This place has a Wales Project and well... at about 4000 years old its one of the oldest living, spoken languages in the world. Particularly cheeky that you have Irish as an option(a related language but very few speakers unfortunately).
Sort it out