His mother, Constance Dahn, nee Le Gay, was a noted actress.
Felix Dahn studied law and philosophy in Munich and Berlin from 1849 to 1853.
In his Urgeschichte der germanischen and romanischen Volker (Berlin, 1881-1890), Dahn went a step farther back still, but here as in his Geschichte der deutschen Urzeit (Gotha, 1883-1888), a wealth of picturesque detail has been worked over and resolved into history with such imagiRative insight and critical skill as to make real and present the indistinct beginnings of German society.
Together with these larger works Dahn wrote many monographs and studies upon primitive German society.
Parallel with this great production of learned and imaginative works, Dahn published some twenty small volumes of poetry.