Daniel P. O'Brien. Suddenly age 65, U.S. Marine Corp Vietnam Veteran. Former husband of Shirley Soristo. Loving father of Kelly O'Brien, Gina (Brandon) LaClair and the late Danielle O'Brien. Dear son of the late Stanley and the late Josephine nee Caldraro, O'Brien. Dearest brother of Jacqueline (the late William, C.F.D.) Canning and Dean (Catherine) O'Brien. Fond uncle and great-uncle of many nieces and nephews. Funeral Services Friday, 11 a.m. at THE MONTCLAIR-LUCANIA FUNERAL HOME, 6901 W. Belmont Ave. Chicago, IL 60634. Interment Maryhill Cemetery. Visitation Thursday, 3-9 p.m. 773-622-9300 or www.montclair-lucaniafuneral.com