William “Bill” J. Sheehan was born March 01, 1932 in Philadelphia, Pennsylvania. He was brought up in a Catholic household with a credit checker as a father. Knowing he might be drafted, Sheehan joined the United States Marine Corps in the 1940s and then returned home to finish his studies to become an accountant.
In 1959, Sheehan became a Certified Public Accountant (CPA). A short term job in California gave him a taste of the west. He arrived in Las Vegas, Nevada in 1962, applied for a CPA position and was immediately hired. He retired in 1997 and became a co-trustee of the Boyer Charitable Foundation with Bob Clark.