Treaty of Lisbon (1859)

The Treaty of Lisbon of 1859 is a treaty signed between Portugal and the Netherlands on April 20, 1859. The treaty fixed the border between the Portuguese and the Dutch colonies in the Indonesian Archipelago between Portuguese Timor and the Dutch East Indies.
King Pedro V of Portugal was represented by António Maria de Fontes Pereira de Melo, and King William III of the Netherlands was represented by Chargé d'affaires Maurits Jan Heldewier.