Someone on Twitter recently contacted us about a photo showing an unknown person with Jackie Kennedy on April 19, 1961 to see if anyone here knows the answer. You can see the photo here along with all other guesses. This is all the info we have to go on.
The photo is from the JFK Library and the U.S. National Archives is also seeking the answer.
Some info I found from a previous Flickr post by the National Archives:
In this photograph First Lady Jacqueline Kennedy greets guests before a reception for the wives of American Society of Newspaper Editors members in the Blue Room, White House, Washington D.C.
edit: Here is a color photo of the man from the same evening. http://i.imgur.com/JQjxSuN.jpg
Based on his uniform, he was a Lieutenant Commander in the US Navy. Can anyone recognize his ribbons?