She isn't one of my Bennetts or Sneads, but I found that she was b. ca. 1850 in NY (3 of 4 censuses). 1870 census of Pittsburgh, Allegheny, PA, says she is d/o Stephen & Elizabeth Bennett. Ancestry.com tree/26227001/person 1836011565 says she m., 28 Feb 1871, PA, Robert Snead.
1870 census, Freedom, Beaver, PA, says Robert is s/o John & Margaret Snead. Laura & Robert are in Allegheny Co. for 1880(Pittsburgh), 1900 (Stow), & 1910 & 20 (Crescent) censuses. Coraopolis is also in Allegheny County.