I think 'Ross Poldark' is very popular. It has a strong hero in Ross, and the vivid descriptions of the Cornish landscape and the mining community are really appealing.
The most popular ones are likely 'Ross Poldark' as it's the foundation of the series. It gives readers a taste of the world of Poldark in Cornwall. 'Demelza' is also very popular because it shows the development of the relationship between Ross and Demelza. Their love story is quite engaging. And 'Jeremy Poldark' might also be popular as it takes the story forward into the next generation and shows new challenges and relationships within the Poldark family.
The Poldark novels by Winston Graham include 'Ross Poldark', 'Demelza', etc. These novels are set in Cornwall and follow the life of Ross Poldark, his family, and his various adventures, including his mining business, his relationships, and the social and political situations of the time.
The Poldark novels are fiction. They are set in Cornwall during the late 18th and early 19th centuries, which gives them a historical backdrop. However, the main plotlines, the relationships between the characters like Ross Poldark and Demelza, are fictional constructs. The author, Winston Graham, used his knowledge of the time period to create a vivid fictional world that has elements of the real Cornwall at that time, but overall it is a work of fiction.
The person behind the Poldark novels is Winston Graham. His storytelling and character development in these novels have captured the hearts of many readers.