Mrs. Winterbottom is the mother of Hartley Winterbottom, the birth name and real identity of Alexei Volkoff, and is therefore the grandmother of Vivian Volkoff. Winterbottom lives in Somerset, England, and is portrayed by Millicent Martin. Winterbottom is aware that her son is a scientist working under the CIA, and that Stephen Bartowski was a close friend and colleague of his. She is not to be confused with Hartley's grandmother, named Vivian Winterbottom.