Poynings' Law (1495) gave the Irish Privy Council a leading role in the legislative process. Before the council summoned each new Parliament (with a general election to the Commons) it had to submit the Parliament's bills to the Privy Council of England for approval as "causes and considerations" for the summons. Initially all bills were by the Irish council, and the Commons and Lords could pass or reject, but not amend them. By the 18th century a legal fiction arose where Parliament debated "heads of a bill" and petitioned the council to introduce it; the council could still amend or reject these "heads". Private bills were always initiated by the council until the Williamite revolution. The council gradually stopped initiating any bills beyond two "causes and considerations" bills, one of which was always a money bill, to which the Commons objected as violating its control of supply. The Patriot Party surprisingly defeated the 1768 "Privy Council Money Bill", heralding an increase in parliamentary sovereignty which culminated in the Constitution of 1782, which removed the Irish Privy Council from the legislative process. (The British Privy Council retained the right to veto Irish bills, but not to amend them.)