I'm italian , just i love all kind of Pizza, but let me say to you something about words : quatro staggioni as u said is quattro stagioni (4 seasons), next is margherita not marguerita, contadina is right! .
thanks for the correction! (I wasn't even sure, if I had spelled them right!) but you know, in my country, their names are spelled in so different ways (most of them false), and since I don't know Italian, then I guess I'm excused..:P