 In addition, he presented his services to David Livingstone, Henry Morton Stanley, Hermenegildo Capelo, Roberto Ivens and Alexandre de Serpa Pinto by relating his knowledge of native customs and identifying local indigenous which he had established good relations.Supposedly, Livingstone, was unimpressed with the Portuguese settler, referring to him as a ""vulgar negrito"" when he arrived in the lands of the Upper Zambezi.At one point, Silva Porto housed the explorer, David Livingstone, and he helped Livingstone find an overland route between Luanda and certain places in the Angolan interior.