As per the constitution article II section 1.
Section 1. The Philippines is a democratic and republican State. Sovereignty resides in the people and all government authority emanates from them.
1987 CONSTITUTION OF THE REPUBLIC OF THE PHILIPPINES - CHAN ROBLES VIRTUAL LAW LIBRARY
Cebu was always a part of the Philippines as a country quite different with the
situation between Scotland and the UK. Scotland already exist as a country before actually a kingdom in the medieval times
and affiliated itself with England.
The Kingdom of Scotland emerged as an independent sovereign state in the Early Middle Ages and continued to exist until 1707. Having entered into a personal union with the kingdoms of England and Ireland following James VI's succession to the English and Irish thrones in 1603, Scotland subsequently entered into a political union with England on 1 May 1707 to create a single Kingdom of Great Britain.[19][20] This union resulted from the Treaty of Union agreed in 1706 and enacted by the twin Acts of Union passed by the Parliaments of both countries, despite popular opposition and anti-union riots in Edinburgh, Glasgow, and elsewhere.[21][22] Great Britain itself subsequently entered into a political union with Ireland on 1 January 1801 to create the United Kingdom of Great Britain and Ireland.
Scotland's legal system has remained separate from those of England and Wales and Northern Ireland, and Scotland constitutes a distinct jurisdiction in public and private law.[23] The continued existence of legal, educational and religious institutions distinct from those in the remainder of the UK have all contributed to the continuation of Scottish culture and national identity since the 1707 union.[24] In 1999, a devolved legislature, the Scottish Parliament, was reconvened with authority over many areas of home affairs following a referendum in 1997. In May 2011, the Scottish National Party won an overall majority in the Scottish Parliament. As a result, a referendum on independence will take place on 18 September 2014.[25][26]
Scotland - Wikipedia, the free encyclopedia
Sorry for the wiki, I don't have access to viable history books,
but I think the accounts mentioned is correct.