Deeply distraught by his brother Lindsay's suicide and his own recent divorce, Crosby died from a self-inflicted gunshot wound on May 4, 1991, in Novato, California, aged 56. On January 14, 2006, Crosby's former wife, Pat Sheehan, died at the age of 74. Their son Dennis Michael Crosby Jr. died on January 15, 2010, and Patrick Anthony Crosby (born New Year's Eve 1960), died at Cedars-Sinai Medical Center in Los Angeles, on September 19, 2011, after a lengthy illness.
