Here's why:
* "Oskui" is a common Persian surname, with variations like "Oskouei" and "Oskooei".
* "Oskui" is a common surname among Persians, particularly those from the Isfahan region.
* "Oskoui" sounds phonetically similar to Persian names and surnames.
It's worth noting that surnames often have multiple origins and can evolve over time. Without additional information, it's difficult to pinpoint the exact origins and meaning of "Oskoui" with certainty.