N
Newboy
How come his brothers all have different surnames?
Because they are using shortened forms of their full name - we just assume that everybody follows the English format of given name/given name/family name. Even in western europe there are many different ways of contructing a full name.
Spain: given name, father's first family name, mother's first family name. Thus, José Luis Rodríguez Zapatero, former president of Spain, is the son of Juan Rodríguez and Purificación Zapatero.
Austria: Traditionalists still put the surname first, thus Anton Graswander will be referred to as der Graswander Anton.
Ireland: Traditionalists use the genitive form of their father's and grandfather's as surnames or sometimes other important relations. So Dairmuid, son of Séan and grandson of Séamus would be known as "Dairmud Sean Shéamuis".