(New York, NY) -- Former Senator John Edwards is said to be the father of his former mistress love child. Thats according to a book proposal by former Edwards aide Andrew Young. "The New York Times" obtained a copy of the proposal made to a publisher. In it, Young claims Edwards once promised to marry Rielle Hunter in a rooftop ceremony in Manhattan at which the Dave Matthews Band would entertain. He allegedly said the wedding would happen after his wife died. Elizabeth Edwards is battling breast cancer. Edwards was outed two years ago by "The National Enquirer" but admitted to the affair with Hunter only last year. However, he has denied hes the father of her 19-month-old daughter. Young once claimed to be the father but has since recanted, claiming Edwards talked him into assuming responsibility. Edwards was the Democratic vice presidential candidate in 2004 and sought the Democratic nomination for president in 2007 and early 2008. He dropped out of the race in January of last year after trailing leading candidates Barack Obama and Hillary Clinton. A federal grand jury reportedly is investigating Edwards for alleged misuse of campaign money in connection with his affair with Hunter.