William H. Gates Sr.
Bill Gates Sr. was an attorney who co-founded his own firm and was on the board of Planned Parenthood. Since retiring from law in 1998, he has served as the co-chair of the Bill & Melinda Gates Foundation and as director for Costco Wholesale. He’s also the author of Showing Up for Life: Thoughts on the Gifts of a Lifetime as well as Wealth and Commonwealth: Why America Should Tax Accumulated Fortunes. [+]