Complex sentence: Although externally, this appears to be of minor interest, this is a rare survivor of a tenement lace or hosiery factory, dating from the early 19th Century, and was used at various times in its early life as a Roman Catholic chapel.
Split into simpler sentences: Although externally, this appears to be of minor interest, this is a rare survivor of a tenement lace or hosiery factory, dating from the early 19th Century. It was used at various times in its early life as a Roman Catholic chapel.