Writer... Father...Son...Legend.
Maybe you sould use some different words. Father and son don't belong, because they are too normal. Father... Something Else... Legend.
Hey, so here is my advice! You should get some good sources and write according to those sources... NOT according to your pre-planned idea. Free yourself from the plan, and just write some sentences about the MAIN IDEA expressed by the writer of one of your sources. Know what I mean?
All you need is to start with a single sentence... a sentence that expresses the idea of one of the sources, and then give another sentence of explanation... then an example... then maybe a quote.
It's kind of mechanical! Try to write 1 paragraph about each book/article you find.
:-)
Free yourself to write right now, and use cut/paste to rearrange the order of paragraphs into a good sequence later on.