Ranselar doesn't seem to be a "common" name, so this seems to be definitely worth pursuing.
I also have a Caroline "Carrie" ADSIT that was married to James Thomas NOTTINGHAM (b. 1849 IN) in 1886, Grant Co., IN. NOTTINGHAM Caroline (Adsit 08/23/1856 03/03/1926).She is buried at Mt. Zion Cemetery in Grant Co., IN.I'm not sure how Caroline is connected to Harriet.Possibly they could have been sisters?