Meaning and name origin
Parnell \p(a)-rne-ll, par-nell\ as a boy's name is pronounced par-NEL. It is of Latin origin, and the meaning of Parnell is "country bumpkin". From Petronius. Also possibly derived from an ancient Roman family name, from the Greek name Petros, meaning "stone". Use may be in honor of Charles Parnell, the 19th-century Irish politician who campaigned for home rule in Ireland. Parnel is a surname derived from a medieval given name. See also Pernell.
Parnell is not a popular first name for males but a very popular surname or last name for all people (#2138 out of 88799, Top 2%) (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the boy name Parnell and its variant forms. The only popular variation form ranked in the Top 1000/100 is Pernell. (Source: 2014 Birth Name Statistics).