The neighbor on Mr. Ed
Florence MacMichael (April 26, 1919 - May 1, 1999).
Florence MacMichael was an American character actress on stage, film, and television. On television, she played Florence Pearson in My Three Sons (1960–61), Winnie Kirkwood in Mister Ed (1963–65), and Barney Fife's girlfriend in two episodes of The Andy Griffith Show. She also appeared in several episodes of Alfred Hitchcock Presents, and guest-starred on The Twilight Zone (in "Mr. Bevis"), Bachelor Father, Dennis the Menace, and Alcoa Premiere.
MacMichael guests in two episodes of The Donna Reed Show - "The Fatal Leap" (Season 2, Episode 26) and "The Poodle Parlor” (Season 3, Episode 26).