Glenn was named after either its first postmaster , Walter J. Glenn , or early settler Robin Glenn .
Glenn is located on Illinois Route 3 , 7 miles ( 11 km ) east - southeast of Rockwood .
Glenn was named after either its first postmaster , Glenn     , or early settler Robin Glenn .
Glenn is located on Illinois Route 3 , 7 miles ( 11 km ) east - southeast of Rockwood .