Greff, Michael G. 90, of Arvada, CO, passed away on June 18, 2010 after a brief but spirited battle with cancer. He was born October 3, 1919 in Regent, ND. Following his WWII South Pacific service in the army he worked for Stanley Home Products and AT&T. He was preceded in death by his beloved wife Ivah (Sue) Greff. Survivors include his sons, John (Vicki) of Louisville, CO, Neal (Candy) of Mesa, AZ, Mark (Vicki) of Grand Junction, CO and Bart (JoAnn) of Golden, CO and his grandchildren Debbie, David, Bethany, TJ, Michael, Kali, Chris, Matt, Teylor and Cole, brother David Greff, PA, sisters Josie Friedt, NM and Lena White, UT and numerous nieces and nephews. Rosary Tuesday, June 22, 2010, 7 pm, Mass Wednesday June 23, 2010, 10 am, both at St. Joan of Arc Catholic Church, 12735 W. 58th Avenue, Arvada, CO 80002. Burial will be at Ft. Logan National Cemetery. In lieu of flowers, contributions may be made to Impact on Education, 75 Manhattan Avenue, Suite 205, Boulder, CO or charity of your choice.