The word Porn in the Thai language means something else...I don't know what.
My wife's Thai first name was Nijaporn. One of her sisters is named named Pornporn on her Thai ID card.
These names were not my wife and her sister's real first names. They were Vietnamese nationals who fled to Thailand after WWII. When they got their Thai citizenships, they had to adopt Thai names. Before my wife's first name became Nijaporn, her first name was Lan.