boater

Frank Tannenbaum (1893-1969) was an Austrian-American historian, sociologist and criminologist who immigrated to the United States in 1905. en.wikipedia.org/wiki/Frank_Tannenbaum

thanks for the identity of the man in the photo. We will update the record.

Possibly from this family -- de Crombrugghe de Picquendaele gw2.geneanet.org/idesrotsart1?lang=en&m=N&v=de%20... But I don't see a match for the J. initial. There do seem to be three branches to the Belgian aristocratic family: de Crombrugghe de Picquendaele, de Crombrugghe de Schipsdaele, de Crombrugghe de Looringhe

This may be little Georges, Georges de Crombrugghe de Looringhe, born 1909 gw1.geneanet.org/gounou?lang=en&pz=auguste&nz=dum... If so, his mother is the former Madeleine de Kerchove de Denterghem d'Exaerde 1882-1966 NYT of September 19, 1915 select.nytimes.com/gst/abstract.html?res=F50816FA385B1773... reports that she and her husband had become separated in Belgium some months before. Having discovered where the other was, they missed each other crossing the Atlantic!!

AMERICANS IN ROME'S LIFE.; Princess Rospigliosi Returns from California, with Little Niece.
July 14, 1912,
Although we are in the middle of Summer, and Rome is considered a Winter resort by the great majority, not in "the know," there are still many interesting and well-known persons in town, one of them is "the beautiful Princess," as she is generally called, the Princess Rospigliosi, (formerly Mary Jennings Reid of Washington.)
query.nytimes.com/gst/abstract.html?res=F30B14FC395813738...

See also:

NYT of July 28, 1915
select.nytimes.com/gst/abstract.html?res=F70D10F9355A1573...
reported that she was sailing for Naples on the Dante Aligheri

The Italian battleship probably pictured here:
en.wikipedia.org/wiki/Italian_battleship_Dante_Alighieri
The pictured princess is one of four American women married into the aristocratic Rospigliosiis. This is likely the former Laura McDonald Stallo, Standard Oil heiress, married to Prince Francesco Rospigliosi and was traveling with her infant son , Prince Camillo, born a month earlier in June, 1915 in America.
select.nytimes.com/gst/abstract.html?res=F70714F7395B1773...

However, one online source does not have the birth of Camilo on June 29, 1915 noted, so something has to be straightened out.
thepeerage.com/p54111.htm#i541107