"Some people have ascribed the naming of Grant Road to the famous Civil War General. Not so. It was named for a Canadian orphan befriended by a man named Grant. The young man moved to Tucson, married and tried to establish a large orchard north of town but failed. His wife became prominent in real estate and subdivided the area at the west end of the road, promptly naming the little lane for her husband's adoptive father."
The current area on Grant, from Country Club to Park was named North, west of Park the road was called Luna. Also there was also another section of Grant road named Demoss Petire for the families that lived there.
City of Tucson, Department of Transportation web site. "Grant Road Corridor Plan." http://www.dot.ci.tucson.az.us/projects/grant/name.php (accessed 08/31/2007. Web site no longer available)
"Planners' sense of humor shows in road names." Arizona Daily Star. May 17, 1998. Page E1.
Tucson Lifestyle. "Streetwise and Stravenued." October 1985. Page 93
"What's in a Name, Tucson' Streets Reflect the Past" by Ruth Corbett Cross. Advertising supplement to Arizona Daily Star and Tucson Citizen. Feb. 23, 1996. Pages 24-25.