From Wikipedia, the free encyclopedia Frank Bank as Lumpy Rutherford on Leave It to Beaver Born Frank Bank, April 12, 1942 Los Angeles, California, USA Died April 13, 2013 (aged 71) Rancho Mirage, California, USA Occupation Actor (1950–1989) and bond broker (after 1973) Known for Portraying Clarence "Lumpy" Rutherford in Leave It to Beaver, first on CBS and then on Frank Bank (April 12, 1942 – April 13, 2013) was an American actor, particularly known for his role as Clarence "Lumpy" Ruth ...