Complex sentence: The House of Commons of Southern Ireland was established under the original version Fourth Home Rule Bill was intended as the sole chamber of the Parliament however the final version of the bill established two chambers with the House of Commons as the lower house of the Parliament.
Split into simpler sentences: The House of Commons of Southern Ireland was established under the Fourth Home Rule Bill. It originally intended as the sole chamber of the Parliament however the final version of the bill established two chambers with the House of Commons as the lower house of the Parliament.