He became famous for shooting the Paiute war leader Chief Paulina on April 25, 1867, near the modern town of Madras.
[1] Maupin was born in Clay County, Kentucky, and moved to Missouri as a teenager.
[2] He then moved to Antelope, in central Oregon, where he became the town's first postmaster in 1871.
[3] Maupin then moved slightly west, establishing a farm and operating a ferry across the Deschutes River.
[2] The city of Maupin was named in his honor by the city's founder, William H. Staats, early in the 20th century; the original name Maupin's Ferry was shortened by postal authorities.