Born near Reedsville, Mifflin County, 1821, the son of Peter and Barbara Minich Keller; pursued the newspaper business; was a merchandiser with seven store locations; blacksmith, and entered the hotel business in Adamsburg, Snyder County (Keller’s Hotel) before 1853. Reuben was a county convention (primary) nominee for the state House but withdrew his name, opting for the position of conferee for the county committee. He was elected to the state Senate, representing, Snyder County, 1859-1862; served as a congressional conferee and federal elector. Late in life he moved to Lock Haven, Clinton County, where he served as sheriff, operated the Pennsylvania House, and later, the Montour House; he retired from the hotel business after the death of his wife, Mary, then moved to Osceola Mills. He died at Reedsville of a stroke while visiting his son-in-law, May 13, 1894.