Query: HILL/MONTGOMERY of Posey and Gibson Counties

Researching my great-grandparents, Wm. T. Hill and Lucinda E. (Montgomery) Hill. He was b. 1829, Blacks Twp., Posey Co., Indiana. She was b. 1840, Gibson Co., Indiana. They were married 1856 in Gibson Co. 7 known children, first 5 of them were b. in Indiana. John B. Hill, b. 1859; Mary E. Hill, b. 1863; Louisa Jane Hill, b 1865; Charles F. Hill, b. 1869; and Rosa E. Hill, b. 1871. Two youngest children: Willis E. Hill, b. 1874 and Florence May Hill, b. 1878, were b. in Mill Shoals Twp., White Co., Illinois. Lucinda d. cir. 1880 in that place. William T. Hill took his children by covered wagon to Missouri, several years later. He may have served in the Mexican-American War. Looking especially for anything pertaining to William T. Hill.
Thank you
4150 Lake George Rd.
Leonard, MI 48367
barbara-stafford@att.net