The National Archives of Spain (Archivo General de Indias) has finalized the restitution of a significant cache of 18th-century diplomatic correspondence and treaties between the Spanish Crown and the Sulu Sultanate. These documents, written in Jawi script and Spanish, detail the complex political and maritime relations in the Sulu Sea prior to full colonial integration. The records were formally handed over to the National Archives of the Philippines in Manila.
Historians describe these archives as essential primary sources for understanding the sovereignty and regional influence of the Sulu Sultanate. The documents cover matters of trade, piracy, and territorial boundaries, providing a Sulu-centric perspective on maritime history. The repatriation is expected to catalyze new research into the pre-modern diplomatic history of the southern Philippines and the wider Malay world.