The High Kings of Ireland (Irish: Ard Rí na hÉireann) were sometimes historical and sometimes legendary figures who had, or who are claimed to have had, lordship over the whole of Ireland. Medieval and early modern Irish literature portrays an almost unbroken sequence of High Kings, ruling from Tara over a hierarchy of lesser kings, stretching back thousands of years. Modern historians believe this scheme is artificial, constructed in the 8th century from the various genealogical traditions of politically powerful groups, and intended to justify the current status of those groups by projecting it back into the remote past. The concept of national kingship is first articulated in the 7th century, but only became a political reality in the Viking Age, and even then not a consistent one.

Until quite recently the development of the pre-Norman kingship of Ireland has been expressed in simplistic terms, with both unionist and nationalist historians—for their own respective purposes—happy to portray pre-Norman Ireland as an immutable hierarchy of kings. In unionist historiography the picture painted has been one of tribal chaos (with Norman invasion supposedly "creating order"), while that of nationalist historiography has been a Utopian harmony (supposedly destroyed by the invaders). Modern-day historians reject both of these portrayals as simplistic and present instead a history of Irish kingship that is more complex and parallels the development of national kingship elsewhere in Europe (for instance the Holy Roman Empire, to some extent).^{[citation needed]}

A monarchical polity has existed in Ireland during three periods of its history, finally ending in 1801. The designation King of Ireland (Irish: Rí na hÉireann) and Queen (regnant) of Ireland was used during these periods. Since April 1949, the only part of Ireland that retains a monarchical system is Northern Ireland (as part of the United Kingdom of Great Britain and Northern Ireland).

Gaelic Ireland consisted of as few as five and as many as nine main kingdoms, subdivided into dozens of smaller kingdoms. The primary kingdoms were Connacht, Ailech, Airgíalla, Ulster, Mide, Leinster, Osraige, Munster and Thomond. Until the end of Gaelic Ireland they continued to fluctuate, expand and contract in size, as well as dissolving entirely or being amalgamated into new entities. The role of High King of Ireland was primarily titular and rarely (if ever) absolute. Gaelic Ireland was not ruled as a unitary state.

The names of Connacht, Ulster, Leinster and Munster are still in use, now applied to the four modern provinces of Ireland. The following is a list of the main Irish kingdoms and their kings.

Coordinates: 53°20′N 08°00′W / 53.333°N 8°W / 53.333; -8

Ireland (pronounced [ˈaɪrlənd] ( listen); Irish: Éire [ˈeːɾʲə] ( listen); Ulster Scots: Airlann or Airlan) is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth. To its east is the larger island of Great Britain, from which it is separated by the Irish Sea.

Politically, Ireland is divided between the Republic of Ireland, which covers just under five-sixths of the island, and Northern Ireland, a part of the United Kingdom, which covers the remainder and is located in the northeast of the island. The population of Ireland is approximately 6.4 million. Just under 4.6 million live in the Republic of Ireland and just under 1.8 million live in Northern Ireland.

Relatively low-lying mountains surrounding a central plain epitomise Ireland's geography with several navigable rivers extending inland. The island has lush vegetation, a product of its mild but changeable oceanic climate, which avoids extremes in temperature. Thick woodlands covered the island until the 17th century. Today, it is one of the most deforested areas in Europe. There are twenty-six extant mammal species native to Ireland.

Brian Bóruma mac Cennétig, (c. 941–23 April 1014), (English: Brian Boru, Middle Irish: Brian Bóruma, Irish: Brian Bóroimhe), was an Irish king who ended the domination of the High Kingship of Ireland by the Uí Néill. Building on the achievements of his father, Cennétig mac Lorcain, and especially his elder brother, Mathgamain, Brian first made himself King of Munster, then subjugated Leinster, making himself ruler of the south of Ireland. He is the founder of the O'Brien dynasty.

The Uí Néill king Máel Sechnaill mac Domnaill, abandoned by his northern kinsmen of the Cenél nEógain and Cenél Conaill, acknowledged Brian as High King at Athlone in 1002. In the decade that followed, Brian campaigned against the northern Uí Néill, who refused to accept his claims, against Leinster, where resistance was frequent, and against the Norse Gaelic Kingdom of Dublin. Brian's hard-won authority was seriously challenged in 1013 when his ally Máel Sechnaill was attacked by the Cenél nEógain king Flaithbertach Ua Néill, with the Ulstermen as his allies. This was followed by further attacks on Máel Sechnaill by the Dubliners under their king Sihtric Silkbeard and the Leinstermen led by Máel Mórda mac Murchada. Brian campaigned against these enemies in 1013. In 1014, Brian's armies confronted the armies of Leinster and Dublin at Clontarf near Dublin on Good Friday. The resulting Battle of Clontarf was a bloody affair, with Brian, his son Murchad, and Máel Mórda among those killed. The list of the noble dead in the Annals of Ulster includes Irish kings, Norse Gaels, Scotsmen, and Scandinavians. The immediate beneficiary of the slaughter was Máel Sechnaill who resumed his interrupted reign.

Joseph Anthony (May 24, 1912 – January 20, 1993) was an American playwright, actor, and director. He made his film acting debut in the 1934 film Hat, Coat, and Glove and his theatrical acting debut in a 1935 production of Mary of Scotland. On five occasions he was nominated for a Tony Award for Best Direction.

Joseph Anthony was born as Joseph Deuster in Milwaukee, Wisconsin on May 24, 1912. His parents were Leonard Deuster and Sophie Deuster (née Hertz). Anthony attended the University of Wisconsin. He married Perry Wilson. He prepared for the stage at the Pasadena Playhouse from 1931 through 1935 and at the Daykarhanova School from 1935 through 1937. Anthony served in the United States Army in World War II from 1942 through 1946. On January 20, 1993, Joseph Anthony died at the age of 80 in a nursing home in Hyannis, Massachusetts.

Joseph Anthony, then appearing under his given name of Joseph Deuster, made his professional acting debut in 1935 playing the role of Rizzio in a production of Mary of Scotland In 1937 he appeared in the touring production of "Dead End". He went on to make his first New York City appearance two years later with the Federal Theatre Project Company playing the title role in a production of Professor Mamlock at Daly's 63rd Street Theatre. After returning from service in World War II, Anthony reappeared on Broadway under the name Joseph Adams at the Belasco Theatre as the Second Man in a 1946 production of Truckline Cafe. He first performed under the name Joseph Anthony in January 1948 at the Maxine Elliott Theatre in a production of Skipper Next to God. He continued to perform under this name through the 1950s, appearing in such original Broadway theatre productions as "The Country Girl", 1951, at the Lyceum Theatre, NYC, Flight into Egypt in 1952, Camino Real in 1953, and Anastasia in 1954.