When and where was Helen born? What do you know about her family?

Helen Keller was born in the small town of Tuscumbia, Alabama.  It was located in the northern part of the state.  She was born on June 27th in the year 1880.
In her autobiography, The Story of My Life, Helen describes her family background in detail.  Her father was Arthur H. Keller, a Confederate captain turned newspaper editor.  He had been married with children previously, before he had become a widower.  Later, he married the young Kate Adams.  With Kate, they had Helen.  
Casper Keller was a relative of Helen Keller.  He originally hailed from Switzerland before moving to Alabama.  It was through him that Helen was related to"the first teacher of the deaf in Zurich... [who] wrote a book on the subject of their education" (Chapter 1).  Helen found this fact to be "rather a singular coincidence; though it is true that there is no king who has not had a slave among his ancestors, and no slave who has not had a king among his."  She recognized the importance of her ancestor's contributions to the education of the deaf.  Some of these contributions later helped her.  Helen also wrote about her grandparents and other relations who she was descended from.