I have two Magdalena Henrietta Otterbeins in my tree but I can't see a direct link wihtout further info. Both are located in Kirn an der Nahe in the Hunsruck.
The first is born to Johann Adam Otterbein and Margaretha Humer or Hummer on 6 July 1803. She never married, to my knowledge, but had an illegitmate son, Georg Jakob Otterbein, on 30 October 1832 - he was my GG grandfather.
The second is born to Georg Jakob Otterbein (the brother of the first Magdalena) and Julianne Phillipne Christmann in Kirn on 2 Nov 1838. I believe that she never married and drowned in the flood in Kirn in 1875.
Johann is a family name but I have no knowledge of the other lines. I would be most interested if you see a connection. I am seeking information that links my Otterbein family in Kirn, with those in Schlitz, where I believe the oldest Otterbein that I have, Konrad, would have been born around 1700.