The link below provides a Google search of Russell's works for the word:
Rothschild -- Google search of mostholyfaith.com
Reference is often made to Fritz Springmeier's book "Bloodlines of the Illuminati" with the claim that the Rothchilds worked with Charles Taze Russell in sending Jewish people to Israel.
We have found no evidence that "the Rothschilds worked with Charles Taze Russell in sending Jewish people into Israel." We could find no evidence that Russell was actively involved in sending Jewish people to Israel, although he did encourage Jews to return there in harmony with fulfillment of Bible prophecies. Russell did send a letter to one of the Rothschilds in which Russell made some suggestions, but, as far as we have been able to determine, as Russell later stated, no response was received from that letter. Other than that, we haven't been able to verify any contact that Russell had with the Rothschilds.
Russell, of course, did not start the "Jehovah's Witnesses" operation, but he did start publishing the Watch Tower magazine, and was the main founder of the Watch Tower Society. He used his own funds obtained from the sale of his businesses; he did not start his Watch Tower Society with some alleged funds from the Rothschilds.
Regarding why Russell started The Watch Tower, see: