I'm just going out on a limb here but I think it has to with the Author''s Norman Bridwell's last name. Note the spelling.
Russell Birdwell's birth name is Russell Juarez Birdwell.
London Keyes's birth name is Cora Birdwell.
It's Cora Birdwell
George Birdwell was born in 1894.
Brian Birdwell was born on 1961-11-03.
George Birdwell died on 1932-11-23.
Russell Birdwell was born on October 17, 1903, in Texas, USA.
Russell Birdwell died on December 15, 1977, in Oxnard, California, USA.
Birdwell Island is an imaginary place in the Clifford the Big Red Dog television show.
Russell Birdwell has written: 'I ring doorbells' -- subject(s): Reporters and reporting
Dan Birdwell was born on October 14, 1940, in Big Spring, Texas, USA.
Dan Birdwell died on February 14, 1978, in Huntington Beach, California, USA of heart attack.