English: Phra Ratcha Phongsawadan Chabap Phra Ratcha Hatthalekha ("Royal Chronicle: Royal Autograph Version") is a chronicle of the kingdoms of Ayutthaya, Thon Buri, and Rattanakosin. It is a revised version of a previous chronicle of Siam, done by King Mongkut and Prince Wongsathiratsanit in the year 2398 Buddhist Era (1855/56 Common Era). The present edition is the second edition, containing additional commentaries by Prince Damrongrachanuphap, published in two volumes:
Volume 1, published in 2457 Buddhist Era (1914/15 Common Era), dealing with the reign of King Uthong until the reign of King Sisaowaphak.
Volume 2, Part 1, published in 2495 Buddhist Era (1952 Common Era), dealing with the reign of King Songtham until the reign of King Suriyamarin.
Volume 2, Part 1, published in 2495 Buddhist Era (1952 Common Era), dealing with the interregnum period (after the fall of Ayutthaya) until the reign of King Rama I of Rattanakosin.
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