Good pick up Kerry you may have something. Here is DC of the child I believe. Birthdate doesn't quite match on the year but does on the month range with the 1860 census. Following the Genealogy rule to believe the info documentation cloeset to the event puts more power in teh census birth date than the DC. At least there is a maiden name to track on. Note the spelling Jungclaus. That is consistent with what Missouri SOS files have even though NPS lists it as Junghaus. Body apparently was moved to Chattanooga National Cemetery. I've not looked for a listing there yet.

http://www.sos.mo.gov/images/archives/deathcerts/1935/1935_00006485.PDF

John R