I also have been looking for elusive parents of John Claybaugh. I believe my great grandmother is Francis (Fannie) Amelia Claybaugh married Alonzo Martin. I also believe that Mary Wellington Claybaugh married John Martin Alonzo's brother. I had found Alonzo Martin Widowed and children listed in 1890 census in Illinois with John Claybaugh Family. I have not found Death certificate for Francis Fanny Claybaugh Martin nor any burial information other than she may be buried in Elliott Cemetery. If you have any information Please contact Me. I have some other pieces of the Claybaugh family I can share as well.