fyi but be careful who you tell this to or you become a 'conspiracy theorist';

The banking families who run the world all intermarry and share a common creed that details a strategy of dominating the world via usury.

Everybody is aware of the Rothschilds. You can discover some of their marriages by simply going down to 'prominent marriages into family'. You should note there's some more that have required some digging on my behalf: https://en.wikipedia.org/wiki/Rothschild_family

These families have married into the Rothschild family:

The Ephrussi family (French pronunciation: ​[ɛfʁysi]) is a Ukrainian Jewish banking and oil dynasty. The family's bank and properties were seized by the Nazi authorities after the 1938 "Anschluss", the annexation of Austria by Nazi Germany. By 1860, the family was the world’s largest exporter of wheat.

https://en.wikipedia.org/wiki/Ephrussi_family

The Goldschmidt family is a family of German Jewish descent, originally from Frankfurt am Main, known for their success in banking and finance. They own the French international banking group BNP Paribas. Former Pakistani President Imran Khan also married into this family. https://en.wikipedia.org/wiki/Goldschmidt_family      ............more.........