http://theinternetpost.net/2013/07/19/the-federal-reserve-cartel-the-eight-families-2/
Not easy to find out from the article, but:
1. Rothschild's of London and Berlin
2. Lazard Brothers of Paris
3. Israel Moses Seaf of Italy
4. Kuhn, Loeb & Co. of Germany and New York
5. Warburg & Company of Hamburg, Germany
6. Lehman Brothers of New York
7. Goldman, Sachs of New York
8. Rockefeller Brothers of New York