Henry Grattan Donnelly (c. 1850–1931) was an author and playwright born in Baltimore, Maryland.
Named after the Irish politician Henry Grattan, Donnelly traveled West and became a reporter for the Omaha Bee when he was in his late teens. While in Nebraska he spent time living with the Indian tribes [which?] there. In 1873 he went to Glasgow and worked on a newspaper [which?] there before working on papers again in the U.S.
Among his plays, which ran on Broadway and major stages [which?] around the country, were: Darkest Russia, The American Girl, Ship Ahoy, Natural Gas, Old Nantucket, The Woman in Black, Her Ladyship, The Millionaire and Fashions. The Woman in Black was made into a movie starring Lionel Barrymore.
He wrote three postulating, science-fiction type novels: The Coming Crown (1880) tells the story of President Ulysses S. Grant becoming Emperor. '84: A Political Revelation (1881) is about the possible results of the 1884 presidential conventions and The Stricken Nation (1890), which depicts England's navy bombarding New York City.