What Shakespearean play has a pair of brothers where one inherits the throne, and the other flees to Ireland after their father's murder?
Donalbain (Macbeth): Donalbain is a character in William Shakespeare's "Macbeth" (c. 1603–1607). Donalbain (Macbeth):  Donalbain flees to Ireland after the murder of his father for refuge. Malcolm (Macbeth): Malcolm is a character in William Shakespeare's "Macbeth" (c. 1603–1607). Malcolm (Macbeth):  In the end, he regains the throne after mustering support to overthrow Macbeth.
"Macbeth"