Margherita is the Italian form of Margaret — from the Greek margaritēs, meaning "pearl." Queen Margherita of Savoy (1851-1926) gave her name to the pizza Margherita (1889), created with tomato, mozzarella, and basil for the colors of the Italian flag.
Margherita is widely used in Italy.
Margherita reduces to six — the number of Italian pearl.