A narrative portrait depicts a behavior or condition that can be realized in more than one event. Its descriptive features need not all have occurred in one named individual at one precise moment.
An account of one particular event is different: its historical elements form part of the intended explanation. Wording, context and dependable reports determine which reading fits; preference alone does not.
Arbitrarily restricting a general moral portrait to an unknown person can obscure its wider lesson. Conversely, treating every genuine historical event as a mere illustration would erase the text's historical content.