Memorials may be made to Parkinsons Society or Leukemia Society. Norman Patrick O'Brien, of O'Fallon, Missouri, died on Friday, December 11, 2009 at the age of 73. Dearest husband of 34 years to Paulette O'Brien; dear son of the late Arthur N. and Dorothy Mae O'Brien; devoted father of Debi Lilly, Andrew P. (Diane) O'Brien and Erinn N. O'Brien; beloved grandfather of Dennis (Jan) Lilly, Garry Lilly, Cheri McCarty, Anastasia Treat, Jolie Treat and Emma Blackwell; great-grandfather of Kaylie McCarty and Garrett Lilly. He is also survived by many special friends. He is preceded in death by his son, David Alan O'Brien, great-grandson, John David Lilly and his brother, James O'Brien. Norman was a self-employed Mechanic for 40 years before his retirement and served in the U.S. Navy.