What is surname? lastname or firstname? so which is the first, surname then lastname or surname thn firstname

i was confused all the time because i still didn't know which is surname if my name "Jack Robberton" which is surname, lastname, firstname. if i wasnt wrong, surname is lastname, so which is first surname or firstname? or surname is firstname? i was really confused when i read this letter... show more i was confused all the time because i still didn't know which is surname if my name "Jack Robberton" which is surname, lastname, firstname. if i wasnt wrong, surname is lastname, so which is first surname or firstname? or surname is firstname?

i was really confused when i read this letter again.

please help me find the answer......
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