In ancestry.com's message boards, the reference that has about Millard F Corey of Fabius, Cortland Co., NY with his parents and grandparents names references a book:
Source:Bruce, Dwight H. (Ed.) Onondaga's Centennial. Boston History Co., 1896, Vol II, pp 268-269.
Then, in the ancestry family trees, An Alice Ament Davidson Gedge has in her ancestry my line Lydia Corey and gives as her reference: "The Converse/Convis and Allied Families" by Mildred Convis Abernathy (1998), p 101
My brother and I intend to look up these references also to check out further information from them.We found many mistakes in Lora LaMance's The Greene Family and Its Branches Book pub ca 1900.Maybe these two references clarify some of the errors.