Claim: Maha Chakkraphat appointed two Front Palace (a royal title with a dual meaning, pertaining to the physical residence and the titleholders second only to the king and regarded as heir) lords from sons of the monarch, namely Ramesuan and Mahin, who reigned during 1548-1563 and 1564-1568, respectively.
Evidence: The Front Palace (Thai: วังหน้า, RTGS: Wang Na), officially the Phraratchawang Bowon Sathanmongkhon (พระราชวังบวรสถานมงคล), was the residence of the royal holder of the same title (also known as the uparaja and usually translated as "viceroy" or "vice king", and sometimes as "Lord" or "Prince of the Front Palace", or "Prince-successor") during the early-to-mid Rattanakosin Kingdom. The office of Front Palace was considered second only to the king and regarded as the heir presumptive. The name, with its dual meaning, originated in the Ayutthaya period, and the holder later gained significant powers during the Rattanakosin period. For the historical palace in Bangkok, see Front Palace, Bangkok. Ramesuan or Rammesuan (Old Thai: รามเมศวร, IPA: [raːm.meː.sǔan; Modern Thai: ราเมศวร, IPA: [raː.meː.sǔan; Sanskrit: रामेश्वर Rāmēśvara; "Lord Rāma") was a Thai royal title given to crown princes of the Ayutthaya Kingdom. Ramesuan (prince of Ayutthaya), a son of King Maha Chakkraphat, captured and taken to Burma in the War of the White Elephants (1563–64)