Here is some info on your Valentin G. Nicodemus taken from Ivan Nicodemus' book "Nicodemus Note in America" dated 1995, page 132:
Valentin G. Nicodemus b. 21 Feb 1824 at Federick Co, MD near Silver Run. Bap't 1 May 1824 St. Mary's Reformed Church - Sponsor Elizabeth Nicodemus (Grandma) child of John and Sarah J. _____ Nicodemus.
Married: 1. 26 Aug 1858 to Mary Jane Elleman - LDS records. d/o Joseph & Ann Elleman. 2. 12 May 1863 at Miami Co, OH License to Fanny Ellen Riggie, b. ca 1835.Resided at Miami Co, OH - moved ca 1867 to Logan Co, IL
Issue 1st Wife: Anna Belle b. Dec 1859 d. Infancy Branson Cem, Miami Cem Infant of Valentine-no name-no stone Branson Cem Issue 2nd Wife: Dora b. 1871 Meona b. 1873
1850 US Census, OH Miami Co. living with father - page 792 1860 US Census, OH Miami Co., Newberry Twp. Balentine b. PA? - Mary b. Ohio, Valentin 55, b. MD - Fanny 45 b. PA - Emma B. 13 b. IL, Dora b. IL, Meoma b. IL
Here's what Ivan has on Valentin G. Nicodemus' parents:
Johannes (John) Nicodemus b. 10 Oct 1803 at Frederick Co, MD near Silver Run. d. 29 Oct 1879 buried at Union Church Rd Cem, Covington, Miami Co, Newberry Twp, OH Stone 76-0-10.Child of Valentine Erasmus & Elizabeth(_____) Nicodemus.
John m. ca 1823 Sarah J. (_____) b. 1804 in MD - census - d. 18 Feb 1888 buried beside spouse, stone 83y.
Resided near Silver Run, MD where he met and married Sarah J.John was a cooper in MD until he moved to Miami Co, OH in 1832 taking his family and mother.Attended St. Mary's Reformed Church in Silver Run.
Valentine Erasmus Nicodemus (grandfather of Valentin G.) was b. 22 Mar 1732 at Medenbach, Nasau (now Germany). He d. 18 Jun 1812 buried at Silver Run Cem, Carroll Co, MD.
I have been to Medenbach a couple of times.If you want to know more about this Nicodemus line, let me know.