John Spencer Davis Jr., an interior designer, artist, and musician, died on March 25 in Alexandria, Va. Mr. Davis, whose last years were spent on Maidstone Lane, East Hampton, in a house owned by his parents for about 50 years, was 64. He had been ill for a long time, his family said.
Known as Jock, he was born in Washington, D.C., on Oct. 24, 1949, to Spencer Davis and the former Sarah Kimball. He attended the Landon School in Bethesda, Md., until ninth grade, and graduated in 1968 from the Salisbury School in Connecticut.