Might give you loads of trouble as the real ones will not like it: Chirayu Isarangkun Na Ayuthaya is a Thai economist and court official. He has been the Director-General of the Crown Property Bureau and Grand Chamberlain of the Bureau of the Royal Household since 1987 and become Lord Chamberlain of the Royal Household in the end of 2016.
Here some different article quotes:
Na Ayudhya[edit]
In the Family Name Act, B. E. 2465, Rama VI ordered that royal descendants who do not hold any title should append "Na Ayudhya" (ณ อยุธยา) to their surname to signify they are descended from a royal bloodline. Sometime spelled "Na Ayutthaya".
Lèse-majesté in Thailand is a crime according to Section 112 of the Thai Criminal Code. It is illegal to defame, insult, or threaten the monarch of Thailand (king, queen, heir-apparent, heir-presumptive, or regent). With penalties ranging from three to fifteen years imprisonment for each count, it has been described as the "world's harshest lèse majesté law"[1] and "possibly the strictest criminal-defamation law anywhere.