Act of Incorporation into the Spanish Monarchy, April 30, 1851
Solemn declaration of incorporation and adhesion to the Sovereignty of Her Catholic Majesty Isabel II, Constitutional Queen of Spain, and of submission to the Supreme Government of the Nation, made by His High Excellency the Sultan of Sulu, Mohammed Pulalun, Datus Mohammed Buyuk, Muluk, Daniel Amil Bahar, Bandahala, Muluk Kahar, Amil Badar, Tumanggung, Juhan, Sanajahan, Na’ib, Mamancha and Sharif Mohammed Binsarin, in the name and in representation of the whole island of Sulu, to Colonel José María de Carlos y O’Doyle, Politico-Military Governor of the Province of Zamboanga, islands of Basilan, Pilas, Tonkil, and those adjacent thereto, as Plenipotentiary specially authorized by His Excellency Antonio de Urbiztondo, Marquis of Solana, Governor and Captain-General of the Philippine Islands.
Article I. His Excellency the Sultan of Sulu, for himself, his heirs and descendants, Datus Mohammed Buyuk, Muluk, Daniel Amil Bahar, Bandahala, Muluk Kahar, Amil Badar, Tumanggung, Juhan, Sanajahan, Na’ib, Mamancha and Sharif Mohammed Binsarin, all of their own free will, declare: That, for the purpose of making amends to the Spanish Nation for the outrage committed against it on the first of January of this year, they desire and request that the island of Jolo and all its dependencies be incorporated with the Crown of Spain, which for several centuries has been their only sovereign and protectress, making on this day a new solemn declaration of adhesion and submission and recognizing Her Catholic Majesty Isabel II, Constitutional Queen of Spain, and those who may succeed her in this supreme dignity, as their rightful Sovereign Lords and Protectors, in virtue of the treaties made in old times, of the treaty of 1836 and the additions made thereto by the present governor of Zamboanga in August, and also and very particularly of the recent conquest of Jolo on the 28th of February of the present year by Captain-General Antonio Urbiztondo, Marquis of Solana and Governor-General of the Philippine Islands.
Article 2. The Sultan and Datus solemnly promise to maintain the integrity of the territory of Sulu and all its dependencies as a part of the Archipelago belonging to the Spanish Government.
Article 3. The island of Sulu and all its dependencies having been incorporated with the Crown of Spain, and the inhabitants thereof being part of the great Spanish family which lives in the vast Philippine Archipelago, the Sultan and Datus shall not be empowered to make or sign treaties, commercial agreements or alliances of any kind with European powers, companies, persons or corporations, and Malayan sultans or chiefs, under pain of nullity; they declare all treaties made with other powers to be null and void if they are prejudicial to the ancient and indisputable rights held by Spain over the entire Sulu Archipelago as part of the Philippine Islands, and they ratify, renew and leave in force all documents containing clauses favorable to the Spanish Government that may have been drawn up before this date, however old they may be.
Article 4. They renew the solemn promise not to carry on piracy or allow anybody to carry on piracy within the dominions of Sulu, and to run down those who follow this infamous calling, declaring themselves enemies of all islands that are enemies of Spain and allies of all her friends.
Article 5. From this day forth the island of Sulu shall fly the Spanish national flag in its towns and on its ships, and the Sultan and other constituted authorities shall use the Spanish war flag, under the principles in use in other Spanish possessions, and shall use no other either on land or on sea.
Article 6. The island of Sulu and its dependencies having been declared an integral part of the Philippine Archipelago, which belongs to Spain, commerce under the Spanish flag in all the ports of the Sultanate shall be free and unmolested, as it is in all the ports belonging to the Nation.
Article 7. The Sultan and Datus of Sulu, having recognized the sovereignty of Spain over their territory, which sovereignty is now strongly established, not only by right of conquest but by the clemency of the conqueror, they shall not erect fortifications of any kind in the territory under their command without express permission of His Excellency the Governor-General of these Islands; the purchase and use of all kinds of firearms shall be prohibited except with a license issued by the same supreme authority, and craft found with arms other than the edged weapons which have from time immemorial been in use in the country shall be considered as enemies.
Article 8. The Spanish Government, as an unequivocal proof of the protection which it grants the Sulus, will give the Sultan and Datus adequate Royal titles establishing their authority and their rank.