Samuel Vigo McKee (c.1833-1913?) of Indiana married Susanna C. Vanatta (1840- )of Pennsylvania, Daughter of John R. Vanatta (1818-bef.1880) of Pennsylvania and Jane McC[avo?] (1820-1901) of Scotland. McKee's c.v. is available all over the internet. His children can be found via ancestry.com census records. I would write a better post right now if the original request wasn't ten years old. My interest is in the Vanattas and McC[avos], by the way.
SVM in the census:
1860: Forest City, County of Holt, Missouri 1870: Waynesville Township, County of Dewitt, Illinois 1880: Mishawaka, Saint Joseph, Indiana
That should get someone started. Feel free to contact me.