High Quality Content by WIKIPEDIA articles! William Williams Chapman (August 11, 1808 – October 18, 1892) was an American politician and lawyer in Oregon and Iowa. He was born and raised in Virginia. He served as a United States Attorney in Iowa when it was part of the Michigan and Wisconsin territories, and then represented the Iowa Territory in the United States House of Representatives. He later immigrated to the Oregon Country, where he served in the Oregon Territorial Legislature.