It is a general consequence of the dynastic constitution of the states of Europe that marriages between the reigning families are at the same time political transactions, and as a rule not only affect public interests, but also stir up the rivalry of parties: this effect however has hardly ever come more prominently into notice than when it was proposed to marry the heir to the throne of England with an Infanta of Spain.

We have remarked that the scheme originated in Spain, had already been once rejected, and then had been mooted a second time by the leading minister of Philip III, the Duke of Lerma. It formed part of Lerma's characteristic idea of fortifying the greatness of the Spanish monarchy by a dynastic alliance with the two royal families which were able to threaten it with the greatest danger, those of France and England. This design brought him into contact with a current of policy and personal feeling in England which was favourable to him: but at the same time the great difficulty which the difference of religion presented, came at once into prominence. Not that it would have been difficult for King James to make the concessions requisite for obtaining the Papal dispensation; on the contrary he was personally inclined to do so: but he feared unpleasant embarrassments with his allies and with his subjects. Count Gondomar, the ambassador, assured the King that he should never be pressed to do anything which violated his conscience or his honour, or by which he might run a risk of losing the love of his people.