Grosvenor was called "one of the most cosmopolitan of Americans" by author and abolitionist Thomas Wentworth Higginson. His son, Gilbert Hovey Grosvenor, was the first employee and longtime editor of National Geographic Magazine, as well as the son-in-law of Alexander Graham Bell.
Edwin Grosvenor wrote and translated much as a historian of Greece and Constantinople. His two volume Constantinople was "the most important treatise ... that has yet appeared in English," wrote a reviewer in the Springfield Republican. "One of the books of the year." The New York Times said that Grosvenor was "uniquely suited to the task."
Having lived in Constantinople for a number of years as a professor and historian, one of the most interesting sections of the first volume of Constantinople appears on page 47, published in 1895, where we are given a historians unique testimony of the existence of the grave of the last Roman Emperor, Constantine XI Palaiologos, in the late 19th century. He writes:
"To-day, in the quarter of Abou Vefa in Stamboul, may be seen a lowly, nameless grave which the humble Greeks revere as that of Constantine. Timid devotion has strewn around it a few rustic ornaments. Candles were kept burning night and day at its side. Till eight years ago it was frequented, though secretly, as a place of prayer. Then the Ottoman Government interposed with severe penalties, and it has since been almost deserted. All this is but in keeping with the tales which delight the credulous or devout. History knows only that the pile of slain about him was the Emperor's funeral pyre, and that the Emperor and Empire have transmuted the soil about the Gate of Saint Romanos, where they died together, into holy ground."
