Imogene Mary Oler, 85, a resident of Alexandria since 1968 who had been active in historic restoration and the Daughters of the American Revolution, died Jan. 16 at Goodwin House in Alexandria. She had a heart ailment.

Mrs. Oler was born in Cincinnati and studied violin at the Cincinnati Conservatory of Music. Following her marriage to Wesley M. Oler Jr., a former director of public relations for General Motors Overseas Operations, she lived in Larchmont and Rye, N.Y., and Greenwich, Conn. She and her husband traveled widely.

When Mr. Oler retired in 1956, the couple settled in White Stone, Va., where they were active in the National Trust for Historic Preservation and the restoration of Christ Church in nearby Irvington. In 1968, they also established a home in Alexandria and that had been their principal residence in recent years.

Mrs. Oler also was active in the DAR, which she joined at the age of 12.

Her husband died last year.

Survivors include three sons, Dr. Wesley M. III, of Washington, William H., of Old Greenwhich, Conn., and The Rev. Clarke K., of Beverly Hills, Calif.; nine grandchildren, and one great-granddaughter.

The family suggests that expressions of sympathy be in the form of contributions to the Foundation for Historic Christ Church, Irvington, Va., 22480.