Where did the chicken which was part of cross breed for Legbar originate?
Legbar:  It was created by cross-breeding Barred Plymouth Rock chicken, Leghorns, Cambars, and in the case of "Cream Legbars", Araucanas. Leghorn chicken: The Leghorn ( or ; Italian: Livorno or Livornese) is a breed of chicken originating in Tuscany, in central Italy.
Tuscany, in central Italy