Who introduced the Stored Program concept?

The exact person is unknown, but it was developed late in WW2 on the ENIAC project. John von Neuman is commonly credited with it because after long conversation with the University of Pennsylvania people who had worked on ENIAC and were planning a new computer incorporating a stored program called EDVAC, he wrote a paper on the subject summarizing the ideas discussed. Unfortunately the First Draft of this paper "escaped" before it could be revised, corrected, and all relevant names added. Only von Neuman's name was listed.