Orlando Pleasant Shields Plummer (April 13, 1836 – December 7, 1913) was an American physician and politician in the state of Oregon.

[3] Plummer received his early education at the local public schools and at the Greenville Academy.

[2] Orlando read medicine from his brother before he returned to his native Pennsylvania to enter medical school.

[2] In 1863, Plummer took the Oregon Trail to California to continue working for the telegraph company, traveling by mule team.

[2] Plummer was promoted to manager of the Portland, Oregon, office of the California State Telegraph Company.

[1][4] Martha was fourteen years younger than Orlando, and they had five children; Grace, Agnes, Ross, Hildegarde, and Marion.

[2] Willamette University’s medical program moved to Portland in 1879 and Plummer returned to teaching at the school .

[1] Plummer was a member of the United States Examining Surgeons, serving as the secretary of the board on several occasions.

[1][2] Plummer spent some time as a professor at the University of Oregon’s medical school, located in Portland.

[6] In 1880, he was elected to the Oregon House of Representatives from Multnomah County (where Portland is located) as a Republican in District 41.