The Rev. John P. Gigrich, 69, a former educator and intelligence officer who had been a Catholic priest here since 1973, died of arteriosclerosis Nov. 21 at George Washington University Hospital.

Dr. Gigrich had been an associate pastor at St. Matthew's Cathedral since 1979. From 1986 to February 1990, he also was coordinator of the Archdiocesan Ministry to Persons with AIDS and special assistant to Cardinal James Hickey for the Ministry to Homosexual Catholics.

His first church post was at Immaculata Conception parish in Washington. He was associate pastor at St. Stephen Martyr parish here from 1974 to 1977.

He then spent two years as associate pastor of Our Lady of Lourdes parish in Bethesda before joining the cathedral staff.

Dr. Gigrich, who came here in the late 1940s, was a native of St. Paul, Minn. He was a summa cum laude political science graduate of the College of St. Thomas in St. Paul and received master's and doctoral degrees in political science from Catholic University.

Before becoming a priest, he taught political science at Catholic and George Washington universities, was a researcher with U.S. News & World Report, and served as headmaster of the St. Aidan Montessori School here.

A World War II Army intelligence veteran, he was an intelligence management consultant to the Defense Department from 1951 to 1971 and was the recipient of a medal for meritorious service.

He then entered the DeSales Hall theology school seminary in Hyattsville and was ordained in 1973.

Dr. Gigrich was a member of the American Academy of Political and Social Sciences, the Association of Former Intelligence Officers, the Modern Language Association, the National Council on Family Relations, the Opera Society of Washington, the Washington Drama Society, and the Lambda Alpha Epsilon society of the American Criminal Justice Association.

Survivors include his stepmother, Florence Gigrich of Minneapolis; two brothers, Frederick, of Tacoma, Wash., and Gregory, of Minneapolis; and two sisters, Mary Robinson of Shafer, Minn., and Cecelia Vanderheyden of Forest Lake, Minn.

MARY C. DILLON Teacher and Principal

Mary C. Dillon, 84, a retired teacher and principal in the D.C. public school system, died Nov. 11 at her home in Washington. She had a series of strokes.

Miss Dillon, a native of Washington, graduated from Eastern High School and the old Wilson Normal School. She received a bachelor's degree from the University of Maryland and a master's degree in education from Teachers College of Columbia University. She began her career in the D.C. schools in 1928. She taught at several elementary schools, and was principal of Hyde, Jackson and Fillmore elementary schools. She retired in 1969.

Miss Dillon was a member of the Education Association of the District of Columbia, the D.C. Elementary Principals Association, the Parent-Teacher Association, the Twentieth Century Club and the Eastern High School Alumni Association.

There are no immediate survivors.