Translation of "Commoner" in Chinese

Before Kate was married last year, some expressed concerns that as she was born a commoner, she would struggle with the pressure of being thrust into the public eye.

凱薩琳去年结婚之前，有人表达了担心说，因为她出生于平民家庭，可能要与被突然置于公众视野来的压力搏斗。