The darning foot from your Brother should fit your 201. :)
I have at least 10 different darning feet from very expensive vintage to fairly expensive modern to cheap modern - and my favorite is the $2.99 plastic/metal one for low shank machines from sew-classic.com
Also, if you have a vintage quilting foot (a very short-toed foot with no "flex" at the ankle and a quilting guide attached to the back) for your 201, you can pull the quilting guide out of it and use it for free-motion quilting. (if you can decrease the pressure on the presser bar sufficiently to allow free movement of the quilt between stitches)