From Wikipedia, the free encyclopedia Sara Seegar (July 1, 1914 – August 12, 1990) was an American actress. A performer on stage, film, radio, and television, she may best be remembered for her role as "Mrs. Wilson" in the 1962–63 season of Dennis the Menace. Starting in 1940, Seegar performed in Broadway plays, in film, on radio and on television. She was a regular character actor on television throughout the 1950s and 1960s, with roles on Suspense, Perry Mason, and The Donna Reed Show. She played ten different small roles on Bewitched over the course of that same series. In the 1962–63 season of Dennis the Menace, Seegar played Eloise Wilson, the wife of John Wilson. She effectively replaced Sylvia Field, who portrayed Martha Wilson—the original "Mrs. Wilson"—from 1959 to 1962. Field left the series after the death of Joseph Kearns (George Wilson), due to George and Martha Wilson being written out of the series. John Wilson (Gale Gordon) began playing John Wilson, George's brother, after Kearns' death.