Hi, Elizabeth. My daughters house in Michigan is about 160 years old and she is an Elizabeth, too.
Since it is pine and that old, your woodwork was probably painted with milk paint. What strippers have you tried? Citristrip and Peel Away are my favorites, depending on the thickness of the old paint but they both take a day or 2 to work. If you have tried comparable products with no result on the paint, then it probably is milk paint. Search the web for the Old Fashioned Milk Paint Company. On their site (I think it is in the FAQ section) they have info on obtaining a stripper especially for milk paint. The chemistry of today's paints and milk paint is entirely different. Hope this helps, but if not, let me know.