It may have been drawn up under England's King John, but these days it belongs to David M. Rubenstein.
To learn how Rubenstein amassed those kind of resources, look no further than his new book, “How To Invest: Masters on the Craft."
At that time, there was not a whole lot of investing going on, with his father working a blue-collar existence for the Post Office, living paycheck-to-paycheck.
Nevertheless, Rubenstein seems to have done alright, with a net worth currently estimated by Forbes at $3.2 billion.
RUBENSTEIN'S ADVICE TO INVESTORS BIG AND SMALLWhen it comes to philanthropy, Rubenstein takes a surprisingly hands-on approach – no foundation, no staff, just him.