When Portugal recovered her independence, in December, 1640, D. João IV of Bragança at once sent Tristão de Mendoza Furtado to the Hague, with instructions to demand a suspension of hostilities. The West-India Company, which profited largely from a state of war, declared in favour of a definite treaty of peace, but objected to the conclusion of an armistice. The Portuguese envoy had no authority to sign such a treaty; but after protracted negotiations an armistice for ten years was signed on June 23rd, 1641, which was to take force outside Europe as soon as it became known there. Meantime, the directors of the West-Indian Company had instructed Count John Moritz of Nassau to take advantage of the momentary weakness of Portugal, after her war of liberation, to seize all he could before the terms of the treaty became known.[486] Count Moritz, being desirous to increase the supply of slaves for the plantations in Brazil, determined to seize upon Luandu. A fleet of twenty-one vessels was at once fitted out at Pernambuco, and placed under the command of Cornelis Cornelissen Jol, surnamed Houtebeen, or “Wooden leg.” It was manned by nine hundred sailors, and had on board two thousand troops, commanded by Jeems Hindersen. This formidable armament left Pernambuco in June 30th, 1641, sighted Cabo Negro on August 5th, and having captured the _Jesus Maria_, on a voyage from Madeira, was by her piloted into the harbour of Luandu. On August 24th the Dutch fleet unexpectedly appeared off S. Paulo, surprising its inhabitants in the midst of their rejoicings at the accession of the “liberator king.” S. Paulo, at that time, was a city of twenty thousand inhabitants, including three thousand Portuguese; but the Governor, Pedro Cezar de Menezes, though he was at the head of nine hundred white troops, offered only a feeble resistance; and, accompanied by many of the citizens, he withdrew to the river Mbengu, and subsequently to Masanganu. The booty which fell into the hands of the Dutch included thirty ships and ninety-eight cannon. They lost no time in gaining the goodwill of the neighbouring sobas, sent an embassy to the King of Kongo (see p. 125), and entertained offers of alliance from Queen Nzinga. Aki musanu (Aca mochana) and Nambu a ngongo (Nabo a ngongo), who had risen upon the Portuguese, were joined by one hundred and fifty Dutchmen, and thus enabled to overcome their enemies, whose leaders, André da Costa and João Vieira, they killed (1642).