The Rev. George Gordon Henderson, 70, the administrator of the Jesuit Community at Georgetown University, died of cancer Dec. 13 at the Jesuit Community.

Since 1985 Father Henderson had been administrator of the Jesuit Community, a job that involved responsibility for its temporal affairs.

From 1974 to 1984 he was associate director of the Washington-based Center for Applied Research in the Apostolate, an organization established by the United States Catholic Conference after the Second Vatican Council.

A native of Charleroi, Pa., Father Henderson grew up in Baltimore. He entered the Jesuit Novitiate in Poughkeepsie, N.Y. Later he taught at a preparatory school in Philadelphia, earned licentiates in philosophy at Woodstock College and in theology at Weston College and received a master's degree in education from Boston College. He was ordained at Woodstock in 1948.

He was educational guidance director at Loyola High School in Baltimore from 1950 to 1954 and from 1954 to 1960 taught psychology and directed the counseling center at the University of Scranton. In 1960 he received a doctorate in psychology at the University of Ottawa.

From 1960 to 1969 Father Henderson was professor of psychology and director of counseling at Wheeling College while at the same time serving as a visiting professor at two colleges in Mexico.

He came to Washington in 1969 as vice president for student affairs at Catholic University, but he resigned after one year because of a diabetic condition. He did private counseling during the early 1970s.

Survivors include three brothers, Bernard E. Henderson and J. Fremont Henderson, both of Baltimore, and Gerald F.X. Henderson of Forest Hills, Md., and three sisters, Mary Moore of Perry Hall, Md., Sister M. Paul Carmelia of the Order of St. Francis of Wilmington, Del., and Sister Thomas Miriam of the Order of St. Francis of Ashton, Pa.

MARLENE GILBERT GRODSKY, 43, assistant principal of the lower school at the Charles E. Smith Jewish Day School in Rockville, died of a pulmonary embolism Dec. 13 at Georgetown University Hospital. She lived in Chevy Chase.

Mrs. Grodsky, who moved to this area in 1965, was a native of Detroit. She earned a bachelor's degree in elementary education at the University of California at Los Angeles and a master's degree in guidance and counseling at Trinity College here. She taught in California before moving here.

From 1965 to 1969, she was a member of the faculty of Oyster Public Elementary School in Washington. She joined the Jewish Day School in 1970, teaching there through 1972. From 1974 to 1976, she worked for Educational Challenges Inc. in Washington, where she helped develop curriculum programs for several national textbook publishers. She rejoined JDS in 1979, where she taught until becoming assistant principal of the lower school in 1982.

She was a member of Temple Sinai in Washington. She had done volunteer work with the gifted program at Chevy Chase Elementary School and had been active in the PTA at Westland Junior High School in Montgomery County.

Survivors include her husband, Dr. David Grodsky, and two sons, Eric and Brian Grodsky, all of Chevy Chase; her father, Lester Gilbert of Woodland Hills, Calif., and one brother, Michael Gilbert of McLean.