marriage practices at the time allowed for a political divorce, but all children were considered legitimate by the Irish: Hugh was married four times. Historians have stated that at this point the Irish title became extinct, as well as forfeit; however, that is by English law of descent. Gaelic law allowed for chiefships and property to descend through tanistry, and thus the descendants of Earl Hugh's brothers acted as The O'Neills of Tyrone, and called themselves Earl of Tyrone by Spanish grant, for the rest of the century. At that point, the chiefship and property transferred to the O'Neill of Tyrone existent back in Ireland through the descendants of Prince Shane O'Neill. Heirs who did not live to succeed are indented. Conn O'Neill, 1st Earl of Tyrone(–1559) Matthew O'Neill, 1st Baron Dungannon (–1550) Brian O'Neill, Baron Dungannon, 2nd Baron Dungannon (c. 1540–1562) Hugh O'Neill 3rd Baron Dungannon, 2nd or 3rd Earl of Tyrone. (–1616) attainted 1608, attainder confirmed by Irish Parliament 1614. Hugh O'Neill, Baron Dungannon (c. 1586–1609) attainted 1608. Baron Dungannon The Barony of Dungannon created for Matthew or Ferdoragh O'Neill was limited, by the terms of the patent, to his descendants who were heirs apparent to the Earldom of Tyrone. This provision would have meant that it acted like a courtesy title: when an Earl of Tyrone had an eldest son, or an eldest grandson by a deceased eldest son, that heir would be Baron Dungannon; when there was no heir apparent, the Barony of Dungannon lapsed until there was. So when Matthew died, his son Brian became Baron Dungannon. However, when Conn Bacach died the next year, Brien was not recognized as Earl of Tyrone, but continued to be called Baron Dungannon until he was killed by Turlough Luineach O'Neill, Shane O'Neill's tanist. His younger brother Hugh O'Neill was called Baron of Dungannon until 1585, when he received a charter confirming him as Earl of Tyrone. The same charter confirmed his son Hugh, the eldest son of his second wife, as Baron Dungannon; Earl Hugh's first marriage was invalid, and his children by that marriage illegitimate. The following men were known as Baron Dungannon: Matthew O'Neill, 1st Baron Dungannon, (before 16241558), cr. 1542. Brian O'Neill, Baron Dungannon (died 1562), de jure Baron Dungannon 1558–9, styled Dungannon 1558–1562. Hugh O'Neill, Earl of Tyrone, (died 1616) styled Baron Dungannon 1562–1585, never de jure: before his brother's death, he was