Complex sentence: The Treaty of Windsor (1175), a territorial agreement made during the time of the Norman invasion of Ireland, was signed in Windsor, Berkshire by King Henry II of England and the High King of Ireland, Ruaidrí Ua Conchobair (Rory O'Connor).
Split into simpler sentences: The Treaty of Windsor (1175) was a territorial agreement made during the time of the Norman invasion of Ireland. It was signed in Windsor, Berkshire by King Henry II of England and the High King of Ireland, Ruaidrí Ua Conchobair (Rory O'Connor).