I do not know who made it, but it is possible it is from the Catawba Valley School in North Carolina. I have been told that when they were trying to form the Counties of Iredell and Catawba (they are opposite of each other on both sides of the Catawba River) they did not have enough population to meet the state requirements. They advertised in the Lancaster, PA. newspaper free land for any skilled tradesmen who wanted to move down and settle in that area. Many people to them up on this offer, and as a result, the local decorative arts including furniture, pottery, quilts, and yes longrifles made in Iredell and Catawba Counties look just like items made in Lancaster, PA. The top gunsmiths in this school were Henry W. Huffman, Daniel Speck, Samuel Peterson, Abram Cook, and W.E. Jones.
If you own Bill Ivey's wonderful book on North Carolina Longrifle Schools, turn to page 240-241 and study rifle #174 and see if they carving does not look similar to this rifle.
Thanks,
Michael