For what it's worth, the Deseret String Band and "Granville Pace" are mentioned in this review in The Old-Time Herald, which refers to the song as a "tremendous sheep herding song ... which Hal Cannon collected in 1976."

Here's a bio of Hal Cannon. He's a folklorist and a member of the Deseret String Band.

Here's a discography for the Deseret String Band. I see that "Granville Pace" appears on 3 of their albums, but the only one still in print is "Utah: Songs of Statehood: The Deseret String Band Centennial Concert."

On this page I also found a reference to a song called "Herding Sheep for Granville Pace."