Historian and diplomatist, born in Massachusetts; commenced his literary career as a novelist, but soon turned all his thoughts to the study of history; spent years in the study of Dutch history; wrote the "History of the Dutch Republic," which was published in 1856, the "History of the United Netherlands," publishing the first part in 1860 and the second in 1868, and the "Life and Death of John Barnevelde" in 1874; was appointed the United States minister at Vienna in 1861, and at St. James's in 1869; he ranks high as a historian, being both faithful and graphic (1814-1877).