My great grandfather was John William Miller (1867 - 1926). I believe he was born in Livingston County, but lived for several decades in Carroll County where he married Minnie Blue Smart and where all of his children were born. I have never been able to determine his parents, but I believe he was somehow related to the Maples family. And he may have been a nephew of William and Elizabeth Maples.
It's such a common name, there may be no connection to your Millers.