It's possible that:
* It's a very uncommon name: There may be people named Preny, but it's not a widely used name.
* It's a nickname: "Preny" might be a shortened version of a longer name.
* It's a fictional name: It could be a character name from a book, movie, or other work of fiction.
* It's a misspelling: There might be a similar sounding name that's spelled differently.
To help me understand, could you please provide more context about where you encountered the name "Preny"?