Jason, This is good news!In my family tree, Charlotte's birthdate is listed as May 15, 1843. (That's close enough for me!). I did not have a birthplace--other than Germany--for her, but her husband-to-be was born in Landesbergen. His name was Frederick Dieterick Dohrmann (b. 1/15/1842). (I know my original posting said Caspar, but I must have been daydreaming--he was born in the 1700s.)They were married in 1865 in Germany. He was an architect there (I have copies of some of his drawings), but after a spell in Chicago, settled into farming in Franklin County, Iowa.
They had ten children, but only six lived to adulthood. My grandfather, their was, was Edward L. Frederick Dohrmann. Charlotte died 1/4/1913 and her husband died 2/23/1911.I'll double check their burial place.
I am eager to learn what you know about her twin brother. All for now, Kathryn