Looking for Fisher Family

My maiden name was Carol Fisher, I an my sister and the last of this line of Fisher's. My father was Paul Fulton Fisher he was born in 1911. His father was Harry Fisher and his father was Percival or Paswell Fisher and I believe they lived in Michigan and in Pennsylvania. The surname was at one time spelled Fischer and that was changed due to the Prussian war. That I am not sure about. But if any one has information I would appreciate the help