1850 Carondelet Township, St Louis County Johannes Riehl 52 farmer, Germany Anna M. Riehl 54 Germany Francis C. Riehl 12 Germany
St Louis Marriages - 3 Nov 1854, Francis Ruehl to Louise Lorenz
1860 Carondelet Township, St Louis County Frank Rhiel 25 Hesse-Dramstadt John Rhiel 60 Hesse-Dramstadt Mary Rhiel 64 Hesse-Dramstadt Louisa Rhiel 25 Baden Mary Rhiel 5 Mo Mina Rhiel 3 Mo Anton Rhiel 2 Mo
1870 Carondelet Township, St Louis County Frank Ruehl 35 farmer, Hesse Darmstadt Louise Ruehl 35 35 Baden Harry Ruehl 14 Mo Mina Ruehl 13 Mo Anton Ruehl 11 Mo Catharine Ruehl 9 Mo Albert Ruehl 7 Mo Lizzie Ruehl 5 Mo Christine Ruehl 2 Mo
So above at least shows that Frank was born in Hesse-Darmstadt, his parents Johannes and Anna Marie, and that Frank's wife was from Baden.
A few of the early St Louis marriage records list the villages the immigrants came from, and the marriage index lists Francis & Louise's marriage in Volume 6, Page 543 of records at St Louis City Hall.