Answer: Hello mate!
the question, in English, is:
"in what year the spanish conquerors founded Antigua?"
After destructions in 1541 caused by the Volcan de agua, spanish conquerors founded Antigua again (they moved the Capital a few miles) in march 10 of 1543, and it was named Santiago de los Caballeros.
So the year in wich the spanish conquerors founded Antigua was 1543.