I know that this posting is from 2002 and that you may already have found this information, but just in case you have not, here is what I found:
According to the book "The Genealogy, History and Alliances of the American House of Delano" (GHAAHD), page 484, Eben Alden Delano, b. 30 Apr 1846 was the son of Capt. Ebenezer Delano and Lucy Hathaway.
Eben Alden Delano was a resident of Chicago, IL (969 W. Monroe St.) married in Providence, RI on 17 Sep 1872 to Emma Josephene Noble, daughter of Franklin and Lamson H. Noble, b. 7 May 1851. GHAAHD lists only one son, Harry Noble Delano, b. 26 Oct 1874 in Chicago, IL.
I am certain that this is the same gentleman that you are seeking, even though the names do not match exactly with what information you have.
If you would like any information regarding his Delano ancestors, please let me know as GHAAHD takes this line back to Philippe De La Noye.