Best known through the philosopher 荀子 (荀子, Xunzi, c. 310-235 BCE), who argued human nature needs ritual and education to be made good. The surname traces back to the small Zhou-era state of Xun.
艹 is the grass radical (top form of 草). The character originally named a plant; that botanical sense is why it carries the grass radical, though today it survives mainly as a surname.