Here"s the answer. I couldnt write it in text
Incorporate what? if you mean their selfs then i would say by giving a spice of them self or make their story have some character that relates to them, but then again the story itself is them already.
Achaeans (Greeks) after Paris of Troy took Helen form her husband Menelaus, King of Sparta
Being born into a different social group might mean that u will have restrictions or gifts that others don't.