Definitely not. Barry Lyndon is purely fictional. The plot, characters, and events were all made up by the creator to provide a unique and captivating story for viewers and readers.
There is not enough information given about Darryl and Lily Lyndon to tell their full story. They could be ordinary people with their own personal experiences, or they might be fictional characters created for a particular purpose. If they are associated with a certain place, like a town or a school, or if they have a particular occupation, that would be very helpful in constructing their story.
Not necessarily. Barry might draw some inspiration from real life, but it's likely to have been embellished or fictionalized for dramatic effect. Many stories like this take liberties to make them more engaging.
As I don't know who Darryl and Lily Lyndon are, I can't provide any general information. They could be anyone. Maybe they are friends, siblings, or colleagues. Without more details, it's impossible to give a proper account of them.