Dennis Michael Crosby (July 13, 1934 – May 4, 1991) was an American singer and occasional actor, the son of singer and actor Bing Crosby and his first wife Dixie Lee, and twin brother of Phillip Crosby. He was the father of Star Trek TNG actress Denise Crosby, who was named after him.
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Early life
Dennis Crosby attended Bellarmine College Preparatory in San Jose with his other brothers where he graduated in 1952. He subsequently enrolled at Washington State University at Pullman on an animal husbandry course with his twin brother. He dropped out of the course after two years and was inducted into the Army in January 1955. He was initially posted to Fort Ord, California and then transferred to Fort Riley in Kansas for training with the US 10th Infantry Division, which transferred for duty in West Germany in the summer of 1955.
When he was 21 in 1955, Dennis inherited $200,000, equivalent to $2,404,000 in 2025, from his late mother's trust.



