 Over the century that followed , Norman feudal law gradually replaced the Gaelic <unk> Law so that by the late 13th century the Norman @-@ Irish had established a feudal system throughout much of Ireland . Norman settlements were characterised by the establishment of <unk> , <unk> , towns and the seeds of the modern county system . A version of the Magna <unk> ( the Great Charter of Ireland ) , <unk> Dublin for London and Irish Church for Church of England , was published in 1216 and the Parliament of Ireland was founded in <unk> . 
