Leo W. O'Neill Jr., 84, a retired professor of elementary education at the University of Maryland, died of lung cancer Oct. 30 at his home in Lusby.

Dr. O'Neill joined the faculty at Maryland in 1956, and he retired in 1982. In retirement, he lived for 10 years at Deep Creek Lake in Western Maryland, then moved to Southern Maryland.

He was born in Chicago and graduated from the University of Chicago with a degree in business administration. After college, he was an accountant with Pan American-Grace Airlines in Peru. In 1942, he returned to the United States and enlisted in the Coast Guard. During World War II, he served in the Pacific aboard ships carrying Marines to combat assignments.

After the war, he received a master's degree in education frp, Kansas City College in Missouri and a doctorate in elementary education from the University of Colorado at Boulder.

He served on the faculty of the University of Vermont for one year before joining the faculty at Maryland.

Survivors include his wife, Aloise Ward O'Neill of Lusby; and two children, Leo William O'Neill III of Glen Burnie and Ann O'Neill of Santa Monica, Calif.