Student, Washington & Lee University, 1971-1973; Bachelor, Texas Agricultural and Mechanical, 1975.
Agent, Rohde & Company, San Antonio, 1975-1976; partner, Stevens, Rohde Commercial, San Antonio, 1976-1978; partner, Duke Stevens Investments, San Antonio, 1978-1980; partner, Stevens & Seale, San Antonio, 1980-1983; partner, Seale, Curtis & Stevens, San Antonio, 1983-1988; owner, Aegis Realty Group, Inc., San Antonio, 1988-1991; owner, The Stevens Group, San Antonio, since 1991.
President Young Representatives, San Antonio, 1972, South Texas Methodist Hospital Roundtable, San Antonio, 1988-1990. Chairman of the board of trustees Concordia Lutheran Hospital, San Antonio, 1986-1988. Member Leadership San Antonio, 1989-1990.
Member International Council Shopping Centers (certified shopping center manager 1984), Realtors National Marketing Institute (Certified Commercial Investment Member designate 1985), National Association Realtors, Texas Association Realtors, Rotary, Ducks Unlimited Club (area chairman 1990), San Antoino Safari Club (board directors since 1989, president 1990-1991).
Married Mary Ann Biasiolli, August 25, 1979. Children: Duke William Junior, Kara Annual.