George Parsons Lathrop (1851–98) was an American poet, novelist, newspaper editor.
Born in Honolulu, Hawaii, Lathrop was educated in New York City and Dresden, Germany. He embarked on a literary career after returning to New York. He was the associate editor of the Atlantic Monthly 1875–77 and later the Boston Courier. He wrote 15 books that ranged from travel accounts to society novels. His notable works include Afterglow (1877) and Somebody Else (1878.)
Lathrop was married to Rose Hawthorne, daughter of American novelist and short story writer Nathaniel Hawthorne. Lathrop wrote A Study of Hawthorne (1876,) edited his father-in-law’s works, and in 1896 adapted Hawthorne’s The Scarlet Letter (1850) as a libretto for the opera by Walter Johannes Damrosch. In 1883, he founded the American Copyright League, which assisted in securing an international copyright law.
In 1891, Lathrop and Rose became Roman Catholics and founded the Catholic Summer School of America. After Lathrop’s death, Rose become Mother Mary Alphonsa and organized the Dominican Sisters of Hawthorne. This community of Dominican tertiaries took charge of two cancer hospitals at New York.