This was the last battle of the last successful conquest of England.
The Battle of the Boyne was fought in 1690 between two rival claimants of the English, Scottish and Irish thrones - the Catholic King James II and William III Prince of Orange, Stadtholder of the United Netherlands, who had deposed James in 1688. The battle, won by William, was the end of James' unsuccessful attempt to regain the crown."
In 1688 William III, invaded England with a Dutch navy and army and deposed his father-in-law, King James II, and took the British Crown.
King, William maintained the Protestant Faith in Ireland, Scotland & England, brought civil and religious liberty to the people with the 1689 English bill of rights, and established parliamentary democracy.