William Allison (August 1, 1930 – April 25, 2016) was a former casino owner and actor. Allison had appeared in many cameo roles, such as Ocean's Eleven as an old guard, but his acting experience started when he was hired as a consultant for the production of Martin Scorsese's 1995 film, Casino, due to his casino experiences. In Casino, Allison played the Latter-day Saint (Mormon) Bagman, John Nance, who was based on Jay Vandermark.

Filmography Year Title Role Notes1995 Casino John Nance 2001 Ocean's Eleven Guard 2003 Stuey Floorman 2008 Yonkers Joe Pit Boss 2010 Blues of Life Father (final film role)

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