It was a gay though ominous feast; but Isabel could not afford much time for such trifling, and on the second day she mounted her palfrey and rode out to Tordesillas, forty miles away, to inspect the fortifications, and then to make an attempt to win back to her cause the Archbishop of Toledo. With prodigious activity the young Sovereigns separately travelled from fortress to fortress, animating followers, and providing for defence; and Isabel was in the imperial city of Toledo late in May 1475, when the news came to her that the King of Portugal had entered Spain with a large army, had formally married the Beltraneja at Palencia, and proclaimed himself King of Castile.[26] Without wasting a moment Isabel started on horseback for her faithful fief of Avila, ninety miles away. She was less than two days on the road, and, though she had a miscarriage on the way at Cabezon she dared not tarry until safe within the walls of the city, which she entered on the 28th May. For some months thereafter the fate of Spain hung in the balance. Ferdinand strained every nerve, but the forces against him were stronger than his, and the Archbishop of Toledo with his wealth and following had reinforced the Portuguese. The invading army lay across the Douro at Toro, a frontier fortress of Leon of fabulous strength, and Ferdinand from Valladolid attempted to push them back and was beaten. All Leon, and the plain of Castile as far as Avila, looked at the mercy of the invaders. But the Portuguese was slow of action, and at this critical juncture the splendid courage of Isabel saved the situation.[27] Summoning Cortes at her city of Medina, the centre of the cloth industry and the greatest mart for bills of exchange in Europe, she appealed to their patriotism, their loyalty, and their love. Her eloquent plea was irresistible. Money was voted without stint, merchants and bankers unlocked their coffers, churches sold their plate, and monasteries disinterred their hoards. Aragonese troops marched in, Castilian levies came to the call of their Queen, and by the end of 1475 Ferdinand was at the head of an army strong enough to face the invaders. Isabel took her full share of the military operations. On the 8th January 1476, she rode out of Valladolid through terrible weather, in the coldest part of Spain, to join Ferdinand’s half-brother, Alfonso, before Burgos. For ten days the Queen travelled through the deep snowdrifts before she reached the camp, to find that the city had already surrendered; and on the evening of her arrival, in the gathering dusk, she entered the city of the Cid, to be received by kneeling, silk-clad aldermen with heads bowed for past transgressions, to be graciously pardoned by the Queen. The pardon was hearty and prompt; for these, and such as these, Isabel meant to make her instruments for bringing Spain to heel.