John was born in Kansas City, Missouri on May 25, 1938 to Melba Grego and George Grego.
John was preceded in death by his parents, brothers Terry and George Grego.
John is survived by; daughter Julie (Hans) Patzel; and son Brad Linck; brother Bob Grego of Lee's Summit, Missouri, brother Vic (Alice) Grego of Lee's Summit, Missouri, brother Chuck (Nancy) Grego of Lee's Summit, Missouri, brother Joe (Jill) Grego of Lee's Summit, Missouri, brother Ron (Barbara) Grego of Lee's Summit, Missouri, brother Larry Grego of Leawood, Kansas and sister Kathryn Thomas of Kansas City, Missouri; eight grandchildren and nine great-grandchildren.
A graveside funeral service with full military honors will take place at 12:00pm on Saturday, July 13 at Mount Moriah Cemetery, 10507 Holmes Road, Kansas City, Missouri.