High Quality Content by WIKIPEDIA articles! William F. Cellini (born November 5, 1934) is co-founder of the New Frontier Companies, a group of Illinois-based real estate companies with headquarters in Chicago that employ more than 250 people statewide. He was previously the chairman of the NYSE-listed Argosy Gaming Company, was the treasurer of the Sangamon County Republican Party and has held several public offices within the state of Illinois.