Maureen, you asked about Doctor David Wilcox. I do not have information about him, but have a lot of background on most of the Wilcox family you listed in your query. William W. and Ann Wells Wilcox were my great-great-grandparents, and their son Frank was my great-grandfather. John Wilcox (or Willcox) was William's brother. They all lived in Omro, Wisconsin, in the 1850s to the late 1860s. Ann's mother was Hannah Cass, who married Abel Waters Wells. The Wells family was living in St. Joseph, Michigan, during those years. William, Ann, Frank and Byron lived in Greeley, Colorado, for just a year (1870-71), then went to Delaware, Iowa, where William died in 1873. Sorry, but I have no information on David Wilcox.