I'm quite sure you've found your roots.
But for the public record, your grand-dad Harlan was the son of Wilbur Emmanuel, in turn the son of Emmanuel who was son of Thomas Benoy and Jane Hix/Hicks of England.
Thomas 1833-1900 was from Werrington, Devon and Jane 1831-1916 was born in Cornwall.
The name Benoy was badly written & therefore mistranscribed on a number of U.S. censuses on Ancestry.com.
As for Thomas & Jane's family, I've managed to find most of them on the censuses and made the corrections for Benoy desc. to find them easily.