Complex sentence: Vestiges of the original 12th century building can still be seen around the doorway in the south wall, however much of the fabric is from the 14th century when the three stage square tower and porch were added.
Split into simpler sentences: Vestiges of the original 12th-century building can still be seen around the doorway in the south wall. However, much of the fabric is from the 14th century, when the three stage square tower and porch were added.