You may not know that Napoelon had another son in addition to Napoleon II. Charles Leon lived from 1806 to 1881. Here is his Wikipedia page:
Charles Léon - Wikipedia, the free encyclopedia
Here is a link to the family tree:
http://www.geni.com/people/Charles-c...00002388408174
His daughter Charlotte (Napoleon's grand daughter) was born in 1867 and lived until 1946.