Source : Webster's Revised Unabridged Dictionary (1913)

Patrial \Pa"tri*al\, a. [L. patria fatherland, country, fr.
   pater father.] (Lat. Gram.)
   Derived from the name of a country, and designating an
   inhabitant of the country; gentile; -- said of a noun. -- n.
   A patrial noun. Thus Romanus, a Roman, and Troas, a woman of
   Troy, are patrial nouns, or patrials. --Andrews.

Source : WordNet®

patrial
     n : a person who has the right to be considered legally a
         British citizen (by virtue of the birth of a parent or
         grandparent)