Complex sentence: Of the original 13th-century building only the chancel remains, the rest having been rebuilt in the prosperous 15th century; the chancel may have survived owing to its link to the nearby friary.
Split into simpler sentences: Of the original 13th-century building only the chancel remains, the rest having been rebuilt in the prosperous 15th century. The chancel may have survived owing to its link to the nearby friary.