<Ul> <Li> Detective 1st Grade Joseph Conor Reagan, son of Frank and Mary, younger brother of Danny and Erin and older brother of Jamie . Joe was a member of the NYPD Warrants Squad partnered with Detective Sonny Malevsky (Michael T. Weiss). He was a graduate of John Jay College of Criminal Justice . He was killed on May 15, 2009, by Sonny when Joe learned that he was the leader of a corrupt gang of police officers called the Blue Templar . Joe's Shield, number 46808, was retired after his death in the line of duty . In "Cursed", the Reagans decided to reinstate the number when an officer made a request to wear it in honor of her late father who had the same number in Boston . </Li> <Li> Mary Margaret Reagan, Frank's late wife and the mother of his four children, Danny, Erin, Joe, and Jamie . She died on September 14, 2005, of cancer . In "Fathers and Sons", it is mentioned that her grandfather helped build the Brooklyn Bridge in the 1870s and' 80s . </Li> <Li> Betty Reagan, Henry's wife of 46 years and the mother of Frank . She died on December 2, 2001 . </Li> <Li> Peter Christopher Reagan, Henry and Betty's oldest son and Frank's older brother . He died of leukemia when he was only eighteen months old . </Li> </Ul> <Li> Detective 1st Grade Joseph Conor Reagan, son of Frank and Mary, younger brother of Danny and Erin and older brother of Jamie . Joe was a member of the NYPD Warrants Squad partnered with Detective Sonny Malevsky (Michael T. Weiss). He was a graduate of John Jay College of Criminal Justice . He was killed on May 15, 2009, by Sonny when Joe learned that he was the leader of a corrupt gang of police officers called the Blue Templar . Joe's Shield, number 46808, was retired after his death in the line of duty . In "Cursed", the Reagans decided to reinstate the number when an officer made a request to wear it in honor of her late father who had the same number in Boston . </Li> <Li> Mary Margaret Reagan, Frank's late wife and the mother of his four children, Danny, Erin, Joe, and Jamie . She died on September 14, 2005, of cancer . In "Fathers and Sons", it is mentioned that her grandfather helped build the Brooklyn Bridge in the 1870s and' 80s . </Li> <Li> Betty Reagan, Henry's wife of 46 years and the mother of Frank . She died on December 2, 2001 . </Li>

Blue bloods what happened to frank's wife