Margaret McConnell Carolan, 75, a native of Washington who was active in church organizations, died of a heart ailment Wednesday at Sibley Memorial Hospital. She lived in Chevy Chase.

She was a member of the Shrine of the Most Blessed Sacrament and its Sodality and Legion of Mary. She also was a member of the Christ Child Society.

Mrs. Carolan was a graduate of the Sacred Heart Academy. She moved to Iowa in 1931 and lived there for 11 years before returning here.

Her husband of 48 years, Thomas H. Carolan, died in 1980. Mrs. Carolan's survivors include two sons, Thomas P. and Michael H., both of Bethesda; two daughters, Ann R. of Brooklyn, N.Y., and Mary Byrne Callahan of Atlanta; a sister, Rose Nevin of Bradenton, Fla.; 16 grandchildren, and one great-grandchild.

The family suggests that expressions of sympathy be in the form of contributions to the Little Sisters of the Poor or to the Bethesda-Chevy Chase Rescue Squad. Margaret M. Carolan

Margaret McConnell Carolan, 75, a native of Washington who was active in church organizations, died of a heart ailment Wednesday at Sibley Memorial Hospital. She lived in Chevy Chase.

She was a member of the Shrine of the Most Blessed Sacrament and its Sodality and Legion of Mary. She also was a member of the Christ Child Society.

Mrs. Carolan was a graduate of the Sacred Heart Academy. She moved to Iowa in 1931 and lived there for 11 years before returning here.

Her husband of 48 years, Thomas H. Carolan, died in 1980. Mrs. Carolan's survivors include two sons, Thomas P. and Michael H., both of Bethesda; two daughters, Ann R. of Brooklyn, N.Y., and Mary Byrne Callahan of Atlanta; a sister, Rose Nevin of Bradenton, Fla.; 16 grandchildren, and one great-grandchild.

The family suggests that expressions of sympathy be in the form of contributions to the Little Sisters of the Poor or to the Bethesda-Chevy Chase Rescue Squad.