Occupation: Physician. From the Yoakum Weekly Herald, December 8, 1910: Fifty one years ago on December 3, 1859 - Drs. Si and John Youngkin landed in Lavaca County with their parents - the late Mr. and Mrs. H. C. Youngkin from Ohio. Their father was a school teacher and engaged in that profession after locating here. The family first settled at Hope, a small village 4 - 5 miles south of where they got their professional education. After becoming practitioners - Dr. Si located at Hope and Dr. John at Antioch. After the railroad was built - they both moved to Sweet Home and a few years thereafter to Yoakum.

From an obituary in the (Yoakum?) newspaper in 1928: The funeral of the late Dr. John A. Youngkin, whose death occurred at the Huth Memorial Hospital, Monday morning at 8:00 o'clock took place Tuesday afternoon at 5:00 o'clock from his residence, Rev. C. B. Yeargan officiating. Interment was had in the Oak Grove Cemetery. He is survived by his wife and nine children: F. M. Youngkin and Jim Youngkin of Big Wells, J. A. Youngkin, Jr. of Moravia, California, Si and Albert Youngkin of Wichita Falls, Mrs. W. E. Bryan, of Independence, Kansas, Mrs. Philip Howerton of Corpus Christi, Mrs. E. G. Majors, of Three Rivers and nine grandchildren and one great-grandchild. Dr. Youngkin was born in Findley, Ohio, in 1850, and in 1859 his parents landed in old Indianola. At the age of 19 years he went up the old trail, and at the time of his death was a member of the Old Trail Drivers Association. He received his education in the country schools and in 1876 he graduated in medicine at the Tulane University at New Orleans. Fifty-four years ago he was married in Hallettsville to Miss Pauline Arnim, daughter of Mr. and Mrs. Albert Arnim. After his graduation he practiced medicine at old Antioch, moving from there to Sweet Home where he practiced for several years. He was among the first settlers in Yoakum and helped to organize the Yoakum National Bank at which time he was a stockholder. He also was engaged in the cattle business for several years. His parents, Mr. and Mrs. R. H. Youngkin resided in Hallettsville and at that time his father was a member of the legislature during Governor Davis' administration.