What does Parnell mean?
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.
How popular is Parnell?
Parnell is a rare first name for males but a very popular surname for both adults and children (#2358 out of 150436, Top 2%). (2000 U.S. Census)
Below is a charted comparison of the popularity of the boy name Parnell and corresponding names. Pernell is the only prominent variation form of Parnell (outside Top 1000) ranked in the Top 1000. Adoption of this form of Parnell was common among parents during the years 1960-1969 (#790) and has become less since. (2014 Birth Statistics)