The term 'Potter of Children's Literature' refers to Beatrix Potter, a British author and illustrator who wrote and illustrated over 20 books for children. Her most famous work is The Tale of Peter Rabbit, which was published in 1902 and has since become one of the most popular children's books of all time. Beatrix Potter's stories are known for their charming illustrations and captivating storylines, and they have been translated into more than 35 languages.