Yes, it is the same Frank R. O'NEIL. He was my maternal great grandfather b. 1851 in IL to Ellen BROWN (b. ? 1815) & Edward O'NEIL b. 1806 Roscrea, Tip IRL to Henry O'NEIL b. ? d. 1826 Roscrea, Tip. IRL & Catherine MAHER b. ? Roscrea, Tip. Irl d. 1840 IL/MO.
O'NEIL, Frank Robert m. PETERS, Hettie J. (or Henrietta J. Or Hettie Mae) - Gallatin Co., IL 7/02/1872
Their son F(rancis) Edward O'NEIL was my mother's father b. St. Louis, MO 10 April 1882.