The opposite of first might be last, or the concept might have no opposite..... "Who was the first person to set foot on the moon?" has no opposite.
Tu'i kanokupoulu of vava'u and ha'apai aka siaosi tupou uluaki took the title from tu'i tonga replace it to tu'i kanokupoulu last dynasty
There are people there now.
Eugene Cernan
Tonga The Last Place on Earth - 2013 was released on: USA: 28 May 2013 (TV premiere)
The last man on the moon was Gene Cernan on December 18, 1972.
first person last and third
Most periods last from 3-5 days but it can vary from person to person.
The word you're looking for is "initials."
It is difficult to pinpoint the first person to have a last name, as the use of surnames has evolved differently across cultures and regions over time. However, last names became more common in Europe during the Middle Ages for the purpose of distinguishing between individuals with the same first name, especially as populations grew.
first
Eugene Cernan, Commander of Apollo 17, on Dec. 14, 1972.