Hazel B. Cassiday, 83, a retired Navy Department systems analyst who was the widow of a locally infamous bootlegger during Prohibition, died Aug. 16 at Southern Maryland Hospital Center. She had renal failure.

Mrs. Cassiday, a native of Milledgeville, Ga., moved to Washington in 1934.

She worked briefly at St. Elizabeths Hospital and then married George L. Cassiday Sr., who was 24 years her senior.

He was one of about 5,000 suppliers of illegal liquor then serving the city's 2,000 speakeasies, as well as private customers. His most important clients were members of Congress, where he came to be known as "the man in the green hat." Even after he was arrested, powerful clients continued to help him, and he was allowed home from jail every night, his son, Frederick C. Cassiday, said. George L. Cassiday died in 1967.

In 1940, Mrs. Cassiday began a career with the Navy that led to work in weapons procurement and a number of superior performance awards.

After she retired in the mid-1970s, she helped deliver food to needy families in Prince George's County and was active in the county Senior Citizens Association and Democratic Party.

Mrs. Cassiday was a member of the board of directors of the Community Development Corp. of First Horizon Baptist Church in Clinton.

In addition to Frederick C. Cassiday, of Fairfax, survivors include another son, Dr. George L. Cassiday Jr. of Salt Lake City; and seven grandchildren.