On July 11, 2008, DeBakey died at The Methodist Hospital in Houston, two months before his 100th birthday; the cause of death remained unspecified. DeBakey was preceded in death by his first wife, Diana Cooper DeBakey who died of a heart attack in 1972 and by his sons, Houston Lawyer Ernest O. DeBakey, who died in 2004, and Barry E. DeBakey, who died in 2007. His brother Ernest, a general surgeon in Mobile, Alabama, died in 2006. In addition to his wife, Katrin, and their daughter, Olga, DeBakey was survived by sons Michael and Denis, as well as sisters Lois and Selma DeBakey, who are both medical editors and linguists at Baylor. After lying in repose in Houston's City Hall, being the first ever to do so, DeBakey received a memorial Service at the Co-Cathedral of the Sacred Heart on July 16, 2008 Dr. DeBakey was granted ground burial in Arlington National Cemetery by the Secretary of the Army. On January 21, 2009, DeBakey became the first posthumous recipient of The Denton A. Cooley Leadership Award.