English commentator records that the assemblies were attended by "all the scum of the country"—the labouring population as well as the landowners. While the distinction between "free" and "unfree" elements of the Irish people was unreal in legal terms, it was a social and economic reality. Social mobility was usually downwards, due to social and economic pressures. The ruling clan's "expansion from the top downwards" was constantly displacing commoners and forcing them into the margins of society. As a clan-based society, genealogy was all important. Ireland 'was justly styled a "Nation of Annalists"'. The various branches of Irish learning—including law, poetry, history and genealogy, and medicine—were associated with hereditary learned families. The poetic families included the Uí Dhálaigh (Daly) and the MacGrath. Irish physicians, such as the O'Briens in Munster or the MacCailim Mor in the Western Isles, were renowned in the courts of England, Spain, Portugal and the Low Countries. Learning was not exclusive to the hereditary learned families, however; one such example is Cathal Mac Manus, the 15th century diocesan priest who wrote the Annals of Ulster. Other learned families included the Mic Aodhagáin and Clann Fhir Bhisigh. It was this latter family which produced Dubhaltach Mac Fhirbhisigh, the 17th century genealogist and compiler of the Leabhar na nGenealach. (see also Irish medical families). Plantations The 16th century Age of exploration brought an interest among the English to colonize Ireland with the reign of the Tudors. King Henry IV established surrender and regrants to the Irish, but it wasn't until the catholic queen Mary I of England who started the first plantations in Ireland in 1550, this would become the model for English colonization moving forward in Ireland and would later form the British imperial model The 1550 plantation counties were known as Philipstown (now Daingean) and Maryborough (now Portlaoise) named by the English planters at the time. A famous group of explorers the West Country Men were active in Ireland at around this time. The Enterprise of Ulster which pitted Shane O'Neill (Irish chieftain) against Queen Elizabeth I was a total failure This was followed by the somewhat successful first British-English colony the Munster planations which had a population of 4,000 in 1580 and in the 1620s may have grown to 16,000 After the defeat of the Irish in Ulster in the Nine Years' War (Ireland); which was not exclusively confined to ulster. The English would try