Pierce and Josette had two children, Josette Harriet Pierce (also known as Harriet Josephine Pierce), born in 1818, and Benjamin Langdon Pierce, born in 1820.
Pierce and Josette had two kids, Josette Harriet Pierce (also known as Harriet Josephine Pierce), born in 1818, and Benjamin Langdon Pierce, born in 1820. This is similar to the concept of having two offspring or children.