Anglo-Spanish War (1585–1604) in the context of "George Somers"

Ireland was conquered by the Tudor monarchs of England in the 16th century. The Anglo-Normans had conquered swathes of Ireland in the late 12th century, bringing it under English rule. In the 14th century, the effective area of English rule shrank markedly, and from then most of Ireland was held by native Gaelic chiefdoms. Following a failed rebellion by the Earl of Kildare in the 1530s, the English Crown set about restoring its authority. Henry VIII of England was made "King of Ireland" by the Crown of Ireland Act 1542. The conquest involved assimilating the Gaelic nobility by way of "surrender and regrant"; the confiscation and colonisation ('plantation') of lands with settlers from Britain; imposing English law and language; banning Catholicism, dissolving the monasteries, and making Anglican Protestantism the state religion.

The Tudor policies in Ireland sparked the Desmond Rebellions (1569–1573, 1579–1583) and the Nine Years' War (1594–1603). Despite Spain sending an armada to support the Irish Catholics during the Anglo-Spanish War (1585–1604), by 1603 the entire country was under English rule. The Flight of the Earls in 1607 largely completed the destruction of the Gaelic aristocracy and left the way open for the Plantation of Ulster, which established a large British Protestant population in the north. Several people who helped establish the plantations of Ireland also played a part later in the early colonisation of North America, particularly a group known as the West Country Men.

The Nine Years' War (May 1593 – 30 March 1603) was a conflict in Ireland between a confederacy of Irish lords (with Spanish support) and the English-led government. The war was primarily a response to the English Crown's advances into territory traditionally owned by the Gaelic nobility. The war was also part of the Anglo-Spanish War and the European wars of religion.

The Kingdom of Ireland was established as an English client state in 1542, with various clans accepting English sovereignty under "surrender and regrant". By the early 1590s, widespread resentment against English rule developed amongst the Gaelic nobility, due to the execution of Gaelic lords, the pillaging of settlements by appointed sheriffs and Catholic persecution.

The Spanish match was a proposed marriage between Prince Charles, the son of King James VI & I of Kingdom of Scotland and England, and Infanta Maria Anna of Spain, the daughter of Philip III of Spain. Negotiations took place over the period 1614 to 1623, and during this time became closely related to aspects of British foreign and religious policy, before breaking down completely.

The policy, unpopular with England's Protestant House of Commons, where the recent Anglo-Spanish War (1585–1604) had not been forgotten, was initiated during the embassy to England of Diego Sarmiento de Acuña, conde de Gondomar, who arrived in London in 1614 with the offer that Spain would not interfere with James's troubled rule in Ireland if James would restrain the English "privateers" in Spanish American waters. Further, he proposed a marriage alliance, offering a dowry of £500,000 (later increased to £600,000), which seemed especially attractive to James after the failure of the Parliament of 1614 to provide him with the financial subsidies he requested.

The Anglo-Portuguese Alliance (Portuguese: Aliança Luso-Inglesa, "Luso-English Alliance") is the oldest alliance that is still in force by political bilateral agreement. It was established by the Treaty of Windsor in 1386, between the Kingdom of England (since succeeded by the United Kingdom) and the Kingdom of Portugal (now the Portuguese Republic), though the countries were previously allied via the Anglo-Portuguese Treaty of 1373.

Since the signing of the Treaty of Windsor, the Kingdom of Portugal and the Kingdom of England, and later the modern Portuguese Republic and United Kingdom, have never waged war against each other, nor have they participated in wars on opposite sides as independent states (with one brief exception as described below). While Portugal was subsumed under the Iberian Union, rebellious Portuguese factions and government in exile sought refuge and help in England. England spearheaded the Anglo-Spanish War (1585–1604) on the side of the deposed Portuguese royal house.

Sir Francis Drake's expedition of 1572‍–‍1573 was an uncommissioned privateering voyage by Sir Francis Drake to the western and southern Caribbean Sea. It is deemed a precursor to hostilities of the subsequent Anglo-Spanish War of 1585–1604.

The Fourth Spanish Armada, also known as the Last Armada, was a military expedition sent to Ireland that took place between August 1601 and March 1602 towards the end of Anglo-Spanish war. The armada – the fourth and smallest of its type, was sent on orders from the Spanish king Philip III to southwestern Ireland to assist the Irish rebels led by Hugh O'Neill, Earl of Tyrone, who were fighting to rid Ireland of Queen Elizabeth I of England's rule. Don Juan del Águila and Don Diego Brochero commanded the expedition that consisted of 36 ships and 4,500 soldiers, and a significant amount of arms and ammunition. The Spanish were also planning to establish a base at Cork from which to strike at England.

Bad weather separated the ships and some had to turn back but the remaining 1,800 men under Águila disembarked at Kinsale on 22 September. Further reinforcements the following month brought the total to 3,500. Admiral Pedro de Zubiaur landed another 700 men in early December at Castlehaven, and sent part of that force commanded by Alonso de Ocampo to Baltimore occupying the castles in the area, Dunboy, Dunasead and Dúnalong (Sherkin Island). The English led by Charles Blount, the Earl of Mountjoy and George Carew, responded in force and were able to besiege Kinsale on 2 October. A small fleet led by Richard Leveson were able to blockade the Spanish at Kinsale by late November. The Irish under Tyrone and clan chief Hugh Roe O'Donnell made their way to Kinsale in a 300-mile march and were joined with 200 Spanish under Alonso de Ocampo.

The siege of Kinsale (Irish: Léigear Chionn tSáile), also known as the battle of Kinsale, was the ultimate battle in England's conquest of Gaelic Ireland, commencing in October 1601, near the end of the reign of Queen Elizabeth I, and at the climax of the Nine Years' War—a campaign by Hugh O'Neill, Hugh Roe O'Donnell and other Irish lords against English rule.

Owing to Spanish involvement and the strategic advantages to be gained, the battle also formed part of the Anglo-Spanish War, the wider conflict of Protestant England against Catholic Spain.