It depends on what you mean by real. There really were two families called Montecchi and Capuletti who were opposed to one another because of being on opposite sides of the Italian conflict between the Guelfs and the Ghibbelines. However, only one of the families lived in Verona, and the story of Romeo and Juliet did not actually happen to them. So although they were real families and they did feud, their feud was not the "Romeo and Juliet family feud". Since the Romeo and Juliet story is a fiction, the feud is only real within the context of the story. In that sense, and in that sense only, the feud is as real as Romeo and Juliet's love.
Yes, they know this from the very start of the play.
Romeo's family are the Montagues. Juliet's are the Capulets
They were born into them.
Montagues and Capulets
The Capulets and the Montagues.
Both stories involve feuding families.
The two families that have been feuding for years are the Montagues and the Capulets. This famous feud is central to William Shakespeare's play "Romeo and Juliet," where the young lovers come from these opposing families. The feud ultimately leads to tragedy and serves as a powerful narrative device to explore themes of love, conflict, and fate.
No, Juliet is not single.
The Montagues (Romeo's family) and the Capulets (Juliets family)
After meeting, Romeo and Juliet planned to get married in secret. They hoped that this would allow them to be together despite their feuding families.
As you suspected when you added this question to the category "Romeo and Juliet", the Shakespearean play which features the Capulet and Montague families is in fact Romeo and Juliet.
He hopes that it will reconcile the feuding families. Which it does, eventually.