He was most likely John Jacob Schwingel (a.k.a. Swingle), so he could very well have been Johann Jakob before his name was Americanized.However, if census information is correct, John did not live near Saarland.Even so, I am going to keep a note of your information just in case.It would not be the first time that a census provided erroneous info. I found John in the 1870 Census living in Birmingham, Allegheny County with his wife and two sons.John had been born in Prussia and wife Elizabeth had been born in Hesse-Darmstadt about 1840.Sons Adolph (b. abt. 1865) and John were born in Pennsylvania. Prussia became part of the German Empire in 1871 and remained so until it became part of the Weimar Republic in 1918.Later the land was divided between Germany and Poland and later it was divided amongst even more countries.Unless I can determine the city in which John was born, I don't know which country his homeland would exist in today. Saarland borders France.I traveled through it on my way to Paris while I lived in Baden-Wurttemburg.It's beautiful country. I found John's military service as well.From the Pension Index, I learned that he was known by both John J. Schwingel and Jacob Swingle.Also, he served in F Company, 78th PA Infantry.The 1890 Veterans Schedule has him as Jacob Swingle, who served with the PA Volunteers from 1861-1864. Also, there was a Jacob Schwingel listed in the cemetery index for First Saint Paul's Evangelical Lutheran Cemetery, Penn Avenue, Pittsburgh (Mount Oliver), Pennsylvania.Jacob died 2 November 1909 in South Fayette.I'm not positive that this is the correct Jacob, especially since I do not even have a date of birth.I wrote for more information, but the folks who maintain the cemetery records are probably busy enough with their regular duties.