* The Rothschilds are a prominent Jewish banking family originally from Frankfurt, Germany. They gained immense wealth and influence in the 19th century through their banking and financial operations.
* The Vanderbilts are an American family who built their fortune through shipping and railroads in the 19th century.
While both families were enormously wealthy and influential in their respective times, their histories and origins are entirely separate. There's no documented evidence suggesting any kinship between them.