AT the outset of that historic period known as the _War of the Spanish Succession_ a remarkable feature presents itself in the fact that two women were chosen to be, as it were, its advanced sentinels--the one of the Austrian party in England, the other of the French party in Spain. These were Lady Churchill (wife of the famous soldier, Marlborough), first lady of the bedchamber to our Queen Anne, and the Princess des Ursins, fulfilling, under the title of _Camerara-Mayor_, the same functions for the new Queen of Spain, Marie-Louise of Savoy, first wife of Philip V. The perpetual struggle previously waged between France and Spain for two centuries constitutes a theme of no ordinary interest. True, that in modern times armed interventions and dynastic and family tendencies have attested the political predominance of the former power, but it was not so in the sixteenth and seventeenth centuries, when the bigoted Philip II. looked upon himself as the head of all Catholicism and the vicegerent of God on earth. The general character of the struggle, the events, the men, the results, are all worthy of consideration, and replete with illustrations of historical and political adventure. Every effort made by the two great adversaries shook Europe to its centre, and the ultimate result of each has always been in favour of the great cause of religious and political freedom. Two centuries of warfare between two absolute governments and two states so profoundly Catholic gave birth to the first European republic--Holland; and served to confirm the power of the great Protestant state--England; and to establish religious liberty in Germany. A brief glance at the more immediate circumstances which brought about this _War of Succession_ may here be necessary. The Treaty of the Pyrenees had terminated the long struggle above alluded to; peace being cemented by the marriage of the Infanta Maria Theresa, daughter of Philip IV. of Spain, to the young Louis XIV. of France, on the 3rd of June, 1660. The royal husband renounced for himself and his heirs all right of succession to the Spanish throne, but was promised in return a moderate dowry, which, however, was only partially paid. Forty years after this marriage, Charles II. of Spain, widowed, childless, and broken in health, selected as his successor Prince Leopold of Bavaria, but he died when five years old. In this difficulty Charles consulted Pope Innocent XII., who decreed that the children of the Dauphin of France were the true, only, and legitimate heirs. But this negotiation was conducted with such profound secresy that it was only after the accession of Philip V., grandson of Louis XIV., that the Pope's interference became public.