Yes, it’s for Dagwood Bumstead, the dorky male lead of the long-running Blondie comic strip, created by Chic Young in 1930. More specifically it’s for the flesh-and-blood Dagwood, embodied by actor Arthur Lake (1905-1987) in a whopping twenty-eight Blondie feature films released between 1938 and 1950. Lake also voiced the character in the Blondie radio program, which aired (mostly) on CBS between 1939 and 1948 – and that’s why we have Dagwood Avenue: the street was named in 1941 on a tract called the “Columbia Mayfair Unit”, referring to the Columbia Broadcasting System. CBS didn’t own the tract but there was presumably some cross-promotion involved. Lake himself appeared at the tract’s dedication – or was at least scheduled to. See Autry Avenue for the other CBS-themed streets in this neighborhood.