Diego Sarmiento de Acuña, conde de Gondomar in the context of "Spanish Match"

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.