George Robert Crosby, known as Bob Crosby, was born on August 23, 1913, in Spokane, Washington. He was the youngest of seven children in a family that included his famous older brother, Bing Crosby. Bob attended Gonzaga College but left to pursue a career in music.

Crosby began his musical journey in the early 1930s, singing with the Delta Rhythm Boys and later with Anson Weeks and the Dorsey Brothers. In 1935, he became a bandleader after the breakup of Ben Pollack's band, forming his own group, the Bob-Cats, a New Orleans Dixieland-style jazz octet. His band was known for hits like "South Rampart Street Parade" and "Big Noise from Winnetka."

During World War II, Crosby served in the U.S. Marine Corps, leading a band. Post-war, he continued to find success on radio and television, hosting The Bob Crosby Show on CBS from 1953 to 1957 and appearing on The Jack Benny Program. He also had a modest film career, including an appearance in "Road to Bali" with Bing.

Bob Crosby received two stars on the Hollywood Walk of Fame for his contributions to television and radio. He passed away on March 9, 1993, in San Diego, California, leaving behind a legacy as a beloved bandleader and entertainer.