Because it was thought to be a seedling tree, it became known by the name "Bartlett pear", but in 1828 a new batch of pear trees arrived from England, and it was realised that the Bartlett pear was the same as the Williams pear. By this time the name "Bartlett pear" had stuck, and is still the most common name for this type of pear in Canada and the United States.
Initially classified as a young tree, it gained the name "Bartlett pear", but by 1828, a new shipment of pear trees from England revealed that the Bartlett pear was actually equivalent to the Williams pear. By then, the term "Bartlett pear" had become firmly established and is still the most commonly used name for this variety in Canada and the United States.