Steve, After reading your message a couple of times, I noticed that something didn't seem right. You state that: The stones were eroded and difficult to read so I have no exact date, but it is definitely the right Martha since the stone says, "Martha A wife of W. Calvert" and is buried next to William and "William M. son of W & M.A. Calvert" (born 1846, unknown to O'Gorman but clearly listed in the censuses with William and Martha). Martha A. (Mitchell) Calvert died Oct. 1864 about 16 years before her husband William who died June 2, 1880. Their son William all most certainly died as a child. It is difficult to envision a situation where a grown man with a wife and children would be buried next to his mother and father with a tombstone reading "William M. son of W & M.A. Calvert". "William" was a popular name among the descendants of William Calvert who married Elizabeth Nodding. I certainly believe you are in the correct branch of the family tree, however it was probably another William, perhaps a cousin not listed in O'Gorman. For example, Leonard Calvert married Roxie Morley. Here is another chance for a William with the middle initial "M". The information shown in O'Gorman comes from descendants of William Calvert and Elizabeth Nodding, not from Ella Foy O'Gorman's personal research. For this branch of the family, there were a number of descendants born in the 1870's and 1880's who were still alive at the time O'Gorman was researching the Calverts. When you read the book, you find things like William Henry Calvert (b. Dec. 25, 1863) was a blacksmith living at 7000 Agnes Avenue , Kansas City, Mo. There is no death date given, however the word "was" is used. This tells me we are looking at research from the long, long ago. George Calvert [email protected]