From the L.A.Times obituary; September 19, 1990:
Pat Costello, 87, Brother of Late Comedian, Dies.
Pat Costello, the brother of late comedian Lou Costello and a writer and producer of television's "Abbott & Costello Show," has died at his Encino home. He was 87.
Costello died Thursday of heart failure after years of heart problems, said his wife, Marty Costello.
Born Anthony S. Cristillo on Dec. 10, 1902, in Paterson, N. J., he served in the Navy during World War I. After he was discharged, he played saxophone under the name Pat Costello with the late bandleader Paul Whiteman in New York City. He later organized a 10-piece band called Pat Costello's Gondoliers, whose theme song was "Neopolitan Nights," which played in a Paterson nightclub.
He came to California in 1939 with his brother and Bud Abbott, who were making their first major film, "Buck Privates." Pat Costello doubled for his younger brother and performed his stunts in the film and in several others. He portrayed a police detective's assistant in Abbott & Costello's "Mexican Hayride" (1948) and also played bit parts in other movies.
During the early and mid-1940s, Costello was a writer for a weekly NBC radio program called "The Camel Show," starring the comedy team. He served in the Navy during World War II and, after he was discharged, wrote and produced the "Abbott & Costello Show" in 1951 and 1952. After Lou Costello died in 1959, Pat Costello retired from the entertainment business and served as executor of his brother's estate.
Costello, an avid golfer, was a charter member of the San Fernando Valley Country Club in 1948, which later was renamed the Woodland Hills Country Club. He was a Valley resident since 1945.
He is survived by his wife of 45 years, and a daughter, Susan Dowding of Canoga Park.
A funeral was held Monday, with burial at San Fernando Mission Cemetery in Mission Hills. J. T. Oswald Mortuary in Reseda handled the arrangements.
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