Daniel S. O'Brien, M. D., Beloit, Kan., a leading physician of central Kansas, is a native of Wisconsin, having been born at Eagle, that State, March 22, 1858. His parents were Torrence and Mary (Smith) O'Brien, both natives of Ireland. The father was born in County Meath, Ireland, in 1808, and immigrated to America during the '40s, first locating at Clinton, N. Y., where he was engaged in farming for a few years. Later he came to Wisconsin. For a time he lived in Minnesota, but, returning to Wisconsin, followed farming for several years. He died at Doylestown, Wis., July 7, 1886. His wife survived him several years and departed this life February 13, 1904. They were the parents of fourteen children, twelve sons and two daughters.

Dr. O'Brien spent his early life on his father's Wisconsin farm, attended the public schools and later pursued his literary education at St. John's College at Prairie du Chien and at Pio Nono College, at Milwaukee, Wis. He then entered Rush Medical College at Chicago, where he was graduated in 1880, and immediately located at Columbus, Wis., where he remained until 1882, when he came to Kansas, locating at Beloit. From the very first his skill as a physician was recognized. He enjoyed an extensive practice, and made a reputation for himself as a physician and surgeon which is by no means confined to his home town. He was married November 15, 1904, to Miss Cora E., daughter of Benjamin Bragdon, retired merchant, Beloit, Kan. While Dr. O'Brien has devoted his best efforts first to his profession, in which he has been preeminently successful, he has by no means been idle in other lines of development. He owns several well improved and valuable farms in Mitchell county and also conducts a large drug store in Beloit. Dr. O'Brien is public spirited and is always ready to coöperate in the support of any worthy enterprise. He is a member of the Catholic church.