Who is Emmanuel, the General's son by Leticia Nazareno from The Autumn of the Patriarch and what is their importance?

Emmanuel is the General's son. Leticia Nazareno is his mother. He was declared a Major-General on the day of his birth. Emmanuel goes to diplomatic receptions and has a miniature General's uniform. He goes with his mother, Leticia, to the market often, and as a result, he is assassinated there with her.