Eleanor Butler Alexander (1888-1960) was my 4th cousin three times removed (according to my family tree software).*  She was also Mrs. Theodore Roosevelt, Jr. , and daughter-in-law to President Teddy Roosevelt.

She grew up in New York with her parents, Henry Addison and Grace Green Alexander, who were described as "prominent society personalities." She debuted in 1907 and met Ted Roosevelt at a house party.  They were married in 1910 at the Fifth Avenue Presbyterian Church in New York City.  They had four children. 

They lived for a time in San Francisco, Puerto Rico, and the Philippines. Eleanor was active with the YMCA and the Red Cross during the war.  She also was an author, an artist, and a photographer.  She published articles and kept scrapbooks, some of which were donated to the Library of Congress.  Add to my list of things to do: a visit to the Library to see her materials!

You can read more about her at http://www.loc.gov/rr/print/coll/womphotoj/rooseveltessay.html.

*Eleanor Butler Alexander was the daughter of Henry Addison Alexander, who was the son of Henry Martin Alexander, who was the son of Archibald Alexander, who was the son of William Alexander, who was the son of Archibald Alexander, who was my 5th-great grandfather.  Eleanor was 4th cousin of my great-grandmother, Ida Virginia Willson (through her father Robert Tate Willson, his mother Phebe Tate, her mother Margaret McClung, her mother Elizabeth Alexander, daughter of Archibald Alexander).