Irish nationalism is a nationalist political movement which asserts that the Irish people are a nation and espouses the creation of a sovereign Irish nation-state on the island of Ireland. Irish nationalism celebrates the culture of Ireland, especially the Irish language, literature, music, and sports. It grew more potent during the period in which all of Ireland was part of the United Kingdom, which led to most of the island seceding from the UK in 1921. Irish nationalists assert that foreign rule has been detrimental to Irish interests. Politically, Irish nationalism gave way to many factions which created conflict, often violent, throughout the island. The chief division affecting nationalism in Ireland was religious. The majority of the island's population was Roman Catholic, which is the part that seceded, but a portion of the northern part has a Protestant majority that elected to stay a part of the United Kingdom. Since the partition of Ireland, Irish nationalism often refers to support for Irish reunification. Generally, Irish nationalism is regarded as having emerged following the Renaissance revival of the concept of the patria and the religious struggle between the ideology of the Protestant Reformation and the Catholic Counter-Reformation. At this early stage in the 16th century, Irish nationalism represented an ideal of the native Gaelic Irish and the Old English banding together in common cause, under the banner of Catholicism and Irish civic identity ('faith and fatherland/motherland'), hoping to protect their land and interests from the New English Protestant forces sponsored by England. This vision sought to overcome the old ethnic divide between Gaeil (the native Irish) and Gaill (the Normans) which had been a feature of Irish life since the 12th century. Protestantism in England introduced a religious element to the 16th-century Tudor conquest of Ireland, as many of the native Gaels and Hiberno-Normans remained Catholic. The Plantations of Ireland dispossessed many native Catholic landowners in favour of Protestant settlers from England and Scotland. In addition, the Plantation of Ulster, begun in 1609, 'planted' a sizeable population of English and Scottish Protestant settlers into the north of Ireland. Irish aristocrats waged many campaigns against the English presence. A prime example is the rebellion of Hugh O'Neill which became known as the Nine Years War of 1594–1603, which aimed to expel the English and make Ireland a Spanish protectorate. A more significant movement came in the 1640s, after the Irish Rebellion of 1641, when a coalition of Gaelic Irish and Old English Catholics set up a de facto independent Irish state to fight in the Wars of the Three Kingdoms (see Confederate Ireland). The Confederate Catholics of Ireland, also known as the Confederation of Kilkenny, emphasised the idea of Ireland as a Kingdom independent from England, albeit under the same monarch. They demanded autonomy for the Irish Parliament, full rights for Catholics and an end to the confiscation of Catholic-owned land. The Cromwellian conquest of Ireland (1649–53) destroyed the Confederate cause and resulted in the permanent dispossession of the old Catholic landowning class. A similar Irish Catholic monarchist movement emerged in the 1680s and 1690s, when Irish Catholic Jacobites supported James II after his deposition in England in the Glorious Revolution of 1688–1689. The Jacobites demanded that Irish Catholics have a majority in an autonomous Irish Parliament, the restoration of confiscated Catholic land, and an Irish-born Lord Deputy of Ireland. Similarly to the Confederates of the 1640s, the Jacobites were conscious of representing the 'Irish nation', but were not separatists and largely represented the interests of the landed class as opposed to all the Irish people. Like the Confederates, they also suffered defeat, in the Williamite War in Ireland (1689–1691). Thereafter, the largely English Protestant Ascendancy dominated Irish government and landholding. The Penal Laws discriminated against non-Anglicans. (See also History of Ireland 1536–1691.) This coupling of religious and ethnic identity – principally Roman Catholic and Gaelic – as well as a consciousness of dispossession and defeat at the hands of British and Protestant forces, became enduring features of Irish nationalism. However, the Irish Catholic movements of the 16th century were invariably led by a small landed and clerical elite. Professor Kevin Whelan has traced the emergence of the modern Catholic-nationalist identity that formed in 1760–1830. Irish historian Marc Caball, on the other hand, claims that 'early modern Irish nationalism' began to be established after the Flight of the Earls (1607), based on the concepts of 'the indivisibility of Gaelic cultural integrity, territorial sovereignty, and the interlinking of Gaelic identity with profession of the Roman Catholic faith'.