Relations with Kongo.
No sooner had the Portuguese regained possession of S. Paulo than the King of Kongo was called to account for having sided with the Dutch and favoured the operations of “foreign” Capuchins. A threatened invasion of his kingdom (1649) speedily led to the conclusion of a treaty of peace (see p. 126). But as the supposed gold and silver mines were not ceded, as promised, the Portuguese once more invaded the country, and in the bloody battle of Ulanga, in 1666, the King lost his life and crown (p. 129). From that time to the close of the century anarchy reigned in Kongo. The disastrous expedition against Sonyo in 1670 (see p. 131) was partly undertaken in order to support one of the many rival kings of that period.