Statistics for occurrence #1 of “Boker” in chapter 1, page 38 of Cambridge History of American Literature: volume 3:
... born in Kennett Square in 1825.
By that time the State had lost what literary glories it had ever had, and although a new brood of native writers had just been born—T. Buchanan Read in 1822, Boker in 1823, Leland in 1824—New York was
...