Barack Obama in traditional German lederhosen? It may be hard to imagine, but researchers in the U.S. say they have located documents that prove the president has German roots dating to the 1700s.

According to parish records uncovered by experts, Obama's 6th great-grandfather Johann Conrad Woelflin was born Jan. 29, 1729, in Besigheim, a small town north of Stuttgart on the Enz river where it feeds into the Neckar.

He sailed aboard a ship called "Patience" in 1750 to America, changing his last name to "Wolfley" upon arrival and eventually settling in Middletown, Pennsylvania, according to head genealogist Anastasia Tyler, who oversaw the research.

In Middletown, he married Anna Catherine Schockey in 1756 and had at least six children, including Ludwig Lewis Wolfley — Obama's 5th great grandfather — who was born in 1766, Tyler said.

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