Andrew Kevin Walker is from America.
Robert Frank Agostinelli -LRB- born May 21 , 1953 -RRB- is an Italian American self made billionaire financier who is the chairman and co-founder of private equity firm Rhone Group .. Rhone. Rhone Group. Rhone Group. Rhone Group. Italian American. Italian American. self made. Self-made man. billionaire. billionaire. financier. financier. co-founder. Entrepreneur. private equity. private equity. Forbes estimates Agostinelli 's net worth to be $ 1.0 billion , ranking him as the 416th richest American .. Forbes. Forbes. 416th. Forbes 400. richest American. Forbes list of billionaires. Agostinelli was ranked # 124 amongst the richest people in the United Kingdom by the Sunday Times Rich List in 2012 through to 2015 with a net worth of # 675 million .. United Kingdom. United Kingdom. Sunday Times Rich List. Sunday Times Rich List