Here is the info I found on IGI for Germany by entering Johann Bartz as father and Rosine Meyer as mother:

JOHANN GOTTLIEB BARZ -Male
Birth: APR 1821 Bonkowo, Wirsitz, Posen, Preussen

CARL LUDWIG BARZ -Male Birth: 29 FEB 1824
Christening: 07 MAR 1824 Wirsitz, Posen, Preussen

JUSTINE BARZ -Female
Birth: 26 FEB 1826
Christening: 12 MAR 1826 Wirsitz, Posen, Preussen
JUSTINE BARZ - Female
Birth: 07 OCT 1831
Christening: 12 MAR 1826 Kolome, Bonkowo, Posen, Preussen

LOUISE BARZ - Female
Christening: 12 OCT 1831 Kolome, Bonkowo, Posen, Preussen
LOUISE BARZ -Female
Birth: 17 OCT 1831
Christening: 06 NOV 1831 Wirsitz, Posen, Preussen
Death: 22 JUL 1832 Wirsitz, Posen, Preussen
LUISE BARZ - Female
Birth: 12 OCT 1831 Bonkowo, Wirsitz, Posen, Preussen

HENRIETTE BARZ -Female
Birth: 07 OCT 1831
Christening: 12 OCT 1831 Kolome, Bonkowo, Posen, Preussen
HENRIETTE BARZ -Female
Birth: 17 OCT 1831
Christening: 06 NOV 1831 Wirsitz, Posen, Preussen
HENRIETTE BARZ - Female
Birth: 12 OCT 1831
Spouse: CARL SCHWARZ
Marriage: 07 DEC 1852 Bonkowo, Wirsitz, Posen, Preussen

JULIANE BARTZ - Female
Birth: 18 JUN 1834
Christening: 24 JUN 1834 Wirsitz, Posen, Preussen

ANNA ROSINA BARZ - Female
Birth: 1837 Bonkowo, Wirsitz, Posen, Preussen
Death: 25 FEB 1855

I tentatively put Juliane in this family into my family, but don't really believe it, since my Juliane was born in November of 1834, which is on her tombstone, she claimed in censuses, etc. But this is the only person I've found who comes close!

Where is Fall City, Wisconsin? I can't find it. My Juliana went to Wisconsin, married and went to Minnesota, so that part I understand very well!

Kathryn