Washington Irving used German folktales adapted for the American market. He would often use German folktales as a basis, and then change the setting and the people to be American. An example of this would be Rip Wan Winkle.
Since our method of communication wasn't very reliable, I couldn't get enough details. So if you see any mistakes, I apologize. I've tried to fit the criteria you've described, and I hope it works for you.
Explanation:
Q) Who is Ben Gunn? How had he survived on the island for so long?
Ans) Ben Gunn is an ex-crewman of Captain Flint's who has been marooned for three years on Treasure Island by his crewmates, after his failure to find the treasure without the map and he was forced to survive on his own by killing and preserving goat meat and his obsession with finding Flint's treasure
Answer:
There are a few noticable themes throughout:
Man and the Natural World
Isolation
Awe
Choices
Youth
Explanation: