After rereading you posting the other item that peaked my interest was the Maryland tie-in about 1840.
My German line is as follows:
Valentin May b1726 m Katherine Eckesb 1741
Johann Phillip May b 1767 m 1797 Elizabeth Bauer b 1775
Johannes May b 1800 m 1823 Katherine Langert
Nicholas May b 1829, Darmstadt-Hesse.
Nicholas must have imigrated between 1829 and his marriage in 1859 to Margaretta ? to Washington,DC. I know there's a large German population in Maryland and some of the family are buried there. Thanks again, Craig