Oregon Republican League:Republican League Register of Oregon, The Register Publishing Company, 1896, page 194.
CORNELIUS, COLONEL THOMAS H., of Cornelius, was born in Missouri in 1827. He came to Oregon in 1845 and served in the Cayuse war in 1848. In 1855 he entered the Yakima war as captain, but was soon elected colonel of the regiment. In 1856 he was elected to the territorial council, serving till the state was admitted. In 1858 he was the only person running on a regular Republican ticket elected to the State Senate, and is the pioneer Republican of that body. He was continuously elected to that body until 1876, except one term during the war, when, as colonel of a regiment, he was in command of Fort Walla Walla Colonel Cornelius was the Republican nominee for Governor in 1886.