Mother of Georgia (Niles) Mills would be: Emma Ransom, b Oct 1863NY [1900USC, lists her as "Emily" with dau Georgia b Dec 1887, and Emily's brother Thomas Ramson, b Feb 1861NY]. She's listed as "Emma" in later censuses. Emma was still a Niles in 1920 so her death certificate might list her husband's given name, allowing his line to be traced further. Emma may have died in Stafford, Genessee Co, or at Caledonia, Livingston Co, NY. Georgia M. (Niles) Mills was living at Caledonia, Livington Co., NY, in 1930, with husband Wm. Mills.