. "541" . "Twickenham is an unincorporated community in Wheeler County, in the U.S. state of Oregon. It is located along the John Day River between Service Creek and Clarno. A bridge at Twickenham carries North Twickenham Road over the river.The locality was originally named Contention after a quarrel between two of its prominent residents. The Contention post office opened in 1886."@en . . . . "Twickenham, Oregon"@en . "-8" . . "-7" . "476.098"^^ . .