parnellite

from The Century Dictionary.

• noun A member of a political group, followers of Charles S. Parnell in his policy of home rule for Ireland; specifically, one of his supporters or adherents in the British House of Commons. They are almost exclusively members for Irish constituencies.
• Pertaining to or supporting Parnellism; advocating or favoring the movement for home rule in Ireland led by Charles S. Parnell.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Eng. Politics) One of the adherents of Charles Stewart Parnell (1846-91) in his advocacy of home rule for Ireland.