I can’t say that I know any specific place that would do this for you, but as an artist, I can say that you can find a sculptor or a painter who might be willing to work on a piece for you.
In order to find some Catholic artists I would ‘google’ the term and see if you can find any with a good reputation behind them for doing good business.
Please don’t be afraid to ask for a commission. I try and tell my friends and family members that artists (well, most, I’d say) would love to have the work and do something for you. Most people I know are timid about asking because they only know the art world as the world portrays it. I personally love it when someone comes to me with a request (so as long as I’m not swamped already). Its part of our job, if we can do what is asked, that is. It costs more, but you have an original that will be valuable. You can choose your own artist, which is better than, say, having to get something from a store that is sold everywhere and manufactured in a cheap way, in my opinion.
Best wishes on your endeavor. I know how hard it can be to find a depiction of those certain saints that aren’t so well known.
