Churchillian Drift
n.— «Long ago, I coined the term “Churchillian Drift” to describe the process whereby the actual originator of a quotation is often elbowed to one side and replaced by someone more famous. So to Churchill or Napoleon would be ascribed what, actually, a lesser-known political figure had said. The process occurs in all fields.» —“Policing Word Abuse” by Nigel Rees Forbes Aug. 13, 2009. (source: Double-Tongued Dictionary)