Question: What Shakespearean play has a pair of brothers where one inherits the throne, and the other flees to Ireland after their father's murder?

full_context: Document 1: Fíachu Finnolach: Fiacha Finnolach, son of Feradach Finnfechtnach, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He took power after killing his predecessor, Fíatach Finn. He ruled for fifteen, seventeen, or twenty-seven years, depending on the source consulted, after which he, and the freemen of Ireland, were killed in an uprising of "aithech-tuatha" or "subject peoples", led, according to the "Lebor Gabála Érenn" and the "Annals of the Four Masters", by Elim mac Conrach, or by Cairbre Cinnchait according to Geoffrey Keating. His wife Eithne, daughter of the king of Alba (Scotland), who was pregnant, fled home to Alba, where she gave birth to Fíachu's son, Tuathal Techtmar, who would ultimately return to Ireland to claim the throne. The "Lebor Gabála Érenn" synchronises his reign with that of the Roman emperor Nerva (AD 96–98). The chronology of Geoffrey Keating's "Foras Feasa ar Éirinn" dates his reign to AD 28–55, that of the "Annals of the Four Masters" to AD 39–56.
Document 2: Banquo: Lord Banquo , the Thane of Lochaber, is a character in William Shakespeare's 1606 play "Macbeth". In the play, he is at first an ally to Macbeth (both are generals in the King's army) and they are together when they meet the Three Witches. After prophesying that Macbeth will become king, the witches tell Banquo that he will not be king himself, but that his descendants will be. Later, Macbeth in his lust for power sees Banquo as a threat and has him murdered; Banquo's son, Fleance, escapes. Banquo's ghost returns in a later scene, causing Macbeth to react with alarm during a public feast.
Document 3: Donalbain (Macbeth): Donalbain is a character in William Shakespeare's "Macbeth" (c. 1603–1607). He is the younger son of King Duncan and brother to Malcolm, the heir to the throne. Donalbain flees to Ireland after the murder of his father for refuge.
Document 4: Suibhne mac Duinnshléibhe: Suibhne mac Duinnshléibhe was a late 12th-century, and early 13th-century, lord in Argyll. He does not appear in contemporary records, although his name appears in the patronymic names of two of his sons. Suibhne appears in the 16th century "Leabhar Chlainne Suibhne", which documents the early history of Clann Suibhne. This account claims that he is the ancestor of Irish clan, and that he was the builder of Castle Sween in Knapdale, Argyll. Suibhne is said to be identical to the "Swineruo", or "Suibhne Ruadh" ("Suibhne the Red"), recorded in the "Ane Accompt of the Genealogie of the Campbells", a 17th-century Clan Campbell genealogy.
Document 5: King Duncan: King Duncan is a fictional character in Shakespeare's "Macbeth." He is the father of two youthful sons (Malcolm and Donalbain), and the victim of a well-plotted regicide in a power grab by his trusted captain Macbeth. The origin of the character lies in a narrative of the historical Donnchad mac Crinain, King of Scots, in Raphael Holinshed's 1587 "The Chronicles of England, Scotland, and Ireland," a history of Britain familiar to Shakespeare and his contemporaries. Unlike Holinshed's incompetent King Duncan (who is credited in the narrative with a "feeble and slothful administration"), Shakespeare's King Duncan is crafted as a sensitive, insightful, and generous father-figure whose murder grieves Scotland and is accounted the cause of turmoil in the natural world.
Document 6: Scotland, PA: Scotland, PA is a 2001 film directed and written by William Morrissette. It is a modernized version of William Shakespeare's "Macbeth". The film stars James LeGros, Maura Tierney, and Christopher Walken. Shakespeare's tragedy, originally set in Dunsinane Castle in 11th century Scotland, is reworked into a dark comedy set in 1975, centered on "Duncan's Cafe", a fast-food restaurant in the small town of Scotland, Pennsylvania. The choice of Pennsylvania is arbitrary, though it coincides with two real towns, one southwest of Harrisburg on the outskirts of Chambersburg called Scotland and one just south of Erie, called Edinboro after Scotland's Edinburgh. The film was shot in Nova Scotia.
Document 7: Murchadh Mac Suibhne: Murchadh Mac Suibhne (died 1267) was a prominent 13th-century noble. Murchadh was a son of Maol Mhuire an Sparáin, son of Suibhne, eponymous ancestor of the Clann Suibhne. Murchadh led the dispossessed clan pressed into King Hakon IV of Norway's service during King Hakon's 1263 expedition. Clann Suibhne were required to surrender hostages to King Hakon as guarantee for their support. Murchadh was granted Arran, however these lands were lost shortly after the Battle of Largs and he appears to have fled to Ireland. He was taken prisoner by Domnall Mac Maghnusa in 1265 and was imprisoned by Walter de Burgh, Earl of Ulster and died shortly afterwards.
Document 8: Macbeth (1971 film): Macbeth (or The Tragedy of Macbeth) is a 1971 British-American historical drama film directed by Roman Polanski and co-written by Polanski and Kenneth Tynan. A film adaptation of William Shakespeare's tragedy of the same name, it retells the story of the Highland lord who becomes King of Scotland through treachery and murder. The film stars Jon Finch as the title character and Francesca Annis as Lady Macbeth, noted for their relative youth as actors. Themes of historic recurrence, greater pessimism and internal ugliness in physically beautiful characters are added to Shakespeare's story of moral decline, which is presented in a more realistic style.
Document 9: Ailein duinn: Ailein duinn ("Dark-haired Alan") is a traditional Scottish song for solo female voice, a lament that was written in Gàidhlig for Ailean Moireasdan ("Alan Morrison") by his fiancée, Annag Chaimbeul ("Annie Campbell"). Ailean Moireasdan was a sea captain from the isle of Lewis. In the spring of 1788 he left Stornoway to go to Scalpay, Harris, where he was to marry Annag Chaimbeul ("Annie Campbell"). Unfortunately, they sailed into a storm and all the crew sank with the vessel, except Annag. The broken-hearted Annag wasted away through grief and composed this lament for her lost love. Annag lost her will to live and died a few months afterwards. Her body was washed ashore near where her fiancé's was found.
Document 10: Bodbchad: Badbchaid, son of Eochu Buadach, son of Dui Ladrach, was, according to late sources, briefly a High King of Ireland. The "Lebor Gabála Érenn" says Bodbchad murdered his brother, the High King Úgaine Mór, who was succeeded directly by his son Lóegaire Lorc. However, Geoffrey Keating and the "Annals of the Four Masters" agree that, after killing Úgaine, Bodbchad took the throne for a day and a half, after which Lóegaire killed him. The "Lebor Gabála" synchronises Úgaine's reign to that of Ptolemy II Philadelphus (281–246 BC). The chronology of Keating's "Foras Feasa ar Éirinn" dates Bodbchad's reign to 411 BC, that of the "Annals of the Four Masters" to 594 BC.
Document 11: Lady Macbeth: Lady Macbeth is a leading character in William Shakespeare's tragedy "Macbeth" (c.1603–1607). The wife of the play's tragic hero, Macbeth (a Scottish nobleman), Lady Macbeth goads her husband into committing regicide, after which she becomes queen of Scotland. Later, however, she suffers pangs of guilt for her part in the crime, which drives her to sleepwalk. She dies off-stage in the last act, an apparent suicide.
Document 12: Lady Macduff: Lady Macduff is a character in William Shakespeare's "Macbeth". She is the wife of Lord Macduff, the Thane of Fife, and the mother of an unnamed son and other children. Her appearance in the play is brief: she and her son are introduced in Act IV Scene II, a climactic scene that ends with her and her son being murdered on Macbeth's orders. Though Lady Macduff's appearance is limited to this scene, her role in the play is quite significant. Later playwrights, Sir William Davenant especially, expanded her role in adaptation and in performance.
Document 13: Dubhghall mac Suibhne: Dubhghall mac Suibhne was a prominent 13th-century noble. He was a son of Suibhne and was Lord of Knapdale. He held lands in Knapdale and in Kintyre. In 1262, he lost his lordship and lands to Walter Stewart, Earl of Menteith after Alexander III of Scotland granted Skipinnish, Killislate amongst other lands in Knapdale and the parish of Kilcalmonell in Kintyre. The Earl of Menteith also obtained Skipness Castle, Castle Sween and Lochranza Castle formerly controlled by Dubhghall.
Document 14: Malcolm (Macbeth): Malcolm is a character in William Shakespeare's "Macbeth" (c. 1603–1607). The character is based on the historical king Malcolm III of Scotland, and is derived largely from the account in "Holinshed's Chronicles" (1587), a history of Britain. He is the elder son of King Duncan, the heir to the throne, and brother to Donalbain. In the end, he regains the throne after mustering support to overthrow Macbeth.
Document 15: Macbeth: Macbeth ( ; full title The Tragedy of Macbeth) is a tragedy by William Shakespeare; it is thought to have been first performed in 1606. It dramatises the damaging physical and psychological effects of political ambition on those who seek power for its own sake. Of all the plays that Shakespeare wrote during the reign of James I, who was patron of Shakespeare's acting company, "Macbeth" most clearly reflects the playwright's relationship with his sovereign. It was first published in the Folio of 1623, possibly from a prompt book, and is Shakespeare's shortest tragedy.
ground_truth: "Macbeth"