William Sierra
Birthday
1957/08/11 (68 years old)
Gender
Male
Place of Birth
Tampa, Florida, USA
Also know as
Bill Alfonso
Biography
William Matthew Sierra is an American former professional wrestling referee and manager better known by his ring name Bill Alfonso. He achieved his greatest success in Extreme Championship Wrestling in the mid-to-late 1990s. He is well known for the whistle that was almost always hanging around his neck, which he blew constantly during his wrestlers' matches In May 1995, he made his debut in Extreme Championship Wrestling as a "trouble-shooting referee".Introduced by Shane Douglas, he angered ma...Read more
Acting
(2022) The WRLD on GCW
as Bill Alfonso
(2000) ECW Guilty as Charged 2000
as Bill Alfonso (Manager)
(1996) ECW Fan Cam: October 18, 1996
as Bill Alfonso (Manager)
(1996) ECW Fan Cam: November 23, 1996
as Bill Alfonso (Manager)
(1997) ECW Fan Cam: October 31, 1997
as Bill Alfonso (Manager)
(1998) ECW Fan Cam: September 17, 1998
as Bill Alfonso (Manager)
(1999) ECW Fan Cam: January 30, 1999
as Bill Alfonso (Manager)
(1999) ECW Fan Cam: February 6, 1999
as Bill Alfonso (Manager)
(1999) ECW Fan Cam: May 29, 1999
as Bill Alfonso (Manager)
(1999) ECW Fan Cam: October 15, 1999
as Bill Alfonso (Manager)
(1999) ECW Fan Cam: October 23, 1999
as Bill Alfonso (Manager)
(1999) ECW Fan Cam: December 17, 1999
as Bill Alfonso (Manager)
(2000) ECW Fan Cam: January 27, 2000
as Bill Alfonso
(2000) ECW Fan Cam: June 3, 2000
as Bill Alfonso (Manager)
(2000) ECW Fan Cam: August 25, 2000
as Bill Alfonso (Manager)
(2000) ECW Fan Cam: September 9, 2000
as Bill Alfonso (Manager)
(1996) ECW: January 27, 1996
as Bill Alfonso (Appearance)
(2000) ECW Heat Wave 2000
as Bill Alfonso (Manager)
(2000) ECW Living Dangerously 2000
as Bill Alfonso
(1995) ECW Barbed Wire, Hoodies and Chokeslams
as Bill Alfonso (State Appointed Referee)
(1995) ECW Enter the Sandman 1995
as Bill Alfonso (Troubleshooting Referee)
(1995) ECW Hardcore Heaven 1995
as Bill Alfonso (Troubleshooting Referee)
(1995) ECW Heat Wave 1995
as Bill Alfonso (Troubleshooting Referee)
(1995) ECW Sunshine State Slaughter
as Bill Alfonso (Troubleshooting Referee)
(1995) ECW Gangstas Paradise 1995
as Bill Alfonso (Troubleshooting Referee)
(1998) The Best of Shane Douglas
as Bill Alfonso (Manager)
(2000) ECW Path of Destruction
as Bill Alfonso (Manager)
(1998) The Best of The Eliminators
as Bill Alfonso (Manager)
(1994) WWE Bloopers Bleeps and Bodyslams
as Bill Alfonso
(2006) WWE: Blood Sport ECW - The Most Violent Matches
as ---
(2013) Barbed Wire City: The Unauthorized Story of Extreme Championship Wrestling
as Himself
(1998) ECW Fan Cam: March 7, 1998
as Bill Alfonso (Manager)
(1995) ECW Fan Cam: September 23, 1995
as Bill Alfonso (Referee)
(1996) ECW Fan Cam: May 10, 1996
as Bill Alfonso (Manager)
(1996) ECW Fan Cam: July 28, 1996
as Bill Alfonso
(1997) ECW Fan Cam: February 14, 1997
as Bill Alfonso (Manager)
(1997) ECW Fan Cam: March 22, 1997
as Bill Alfonso (Manager)
(2005) Hardcore Homecoming
as Bill Alfonso (Manager)
(2001) ECW: The Best of Cactus Jack
as Bill Alfonso
(2006) ECW: Bloodsport The Most Violent Matches
as Bill Alfonso
(1996) ECW The Doctor Is In 1996
as Bill Alfonso
(1999) ECW Crossing The Line 1999
as Bill Alfonso
(1996) ECW Massacre on Queens BLVD
as Bill Alfonso (Manager)
(2000) ECW Anarchy Rulz 2000
as Bill Alfonso (Manager)
(1996) ECW November to Remember 1996
as Bill Alfonso
(1999) ECW House Party 1999
as Bill Alfonso
(2003) MLW War Games
as Bill Alfonso
(2012) WWE: Undertaker 20-0 - The Streak
as Bill Alfonso - Referee (archive footage)
(2003) MLW Rise of The Renegades
as ---
(2019) WrestleCade Supershow 2019
as Bill Alfonso
(2001) MECW Inaugural Show
as ---
(1995) ECW November to Remember 1995
as Bill Alfonso
(1998) ECW Wrestlepalooza 1998
as Bill Alfonso
(1995) ECW Holiday Hell 1995
as Bill Alfonso (Manager)
(1998) ECW It Ain't Seinfeld
as Bill Alfonso (Manager)
(1998) ECW A Matter of Respect 1998
as Bill Alfonso (Manager)
(1996) ECW House Party 1996
as Bill Alfonso (Manager)
(1996) ECW Big Apple Blizzard Blast
as Bill Alfonso
(1996) ECW CyberSlam 1996
as Bill Alfonso
(1996) ECW Just Another Night 1996
as Bill Alfonso
(1996) ECW Big Ass Extreme Bash 1996
as Bill Alfonso
(1996) ECW Hostile City Showdown 1996
as Bill Alfonso
(1996) ECW A Matter of Respect 1996
as Bill Alfonso (Manager)
(1996) ECW Hardcore Heaven 1996
as Bill Alfonso
(1996) ECW Natural Born Killaz
as Bill Alfonso (Manager)
(1996) ECW When Worlds Collide 1996
as Bill Alfonso
(1998) ECW Heat Wave 1998
as Bill Alfonso
(1996) ECW Ultimate Jeopardy 1996
as Bill Alfonso
(1996) ECW High Incident
as Bill Alfonso (Manager)
(1996) ECW Holiday Hell 1996
as Bill Alfonso
(1997) ECW Barely Legal 1997
as Bill Alfonso (Manager)
(1998) ECW November To Remember 1998
as Bill Alfonso (Manager)
(1999) ECW Guilty as Charged 1999
as Bill Alfonso
(1997) ECW Wrestlepalooza 1997
as Bill Alfonso (Manager)
(1997) ECW Born To Be Wired
as Bill Alfonso
(1997) ECW Hardcore Heaven 1997
as Bill Alfonso (Manager)
(1997) ECW As Good As It Gets
as Bill Alfonso
(1997) ECW November to Remember 1997
as Bill Alfonso (Manager)
(1998) ECW House Party 1998
as Bill Alfonso
(1998) ECW CyberSlam 1998
as Bill Alfonso (Manager)
(1995) ECW Mountain Top Madness
as Bill Alfonso
(1998) ECW Living Dangerously 1998
as Bill Alfonso
(1999) ECW Living Dangerously 1999
as Bill Alfonso (Manager)
(1999) ECW CyberSlam 1999
as Bill Alfonso (Manager)
(1999) ECW Hardcore Heaven 1999
as Bill Alfonso (Manager)
(1999) ECW Heat Wave 1999
as Bill Alfonso
(1999) ECW Anarchy Rulz 1999
as Bill Alfonso (Manager)
(1999) ECW November to Remember 1999
as Bill Alfonso (Manager)
(2003) MLW Hybrid Hell
as Bill Alfonso (Manager)
(1997) ECW Heat Wave 1997
as Bill Alfonso (Manager)
(1997) ECW Fan Cam: April 4, 1997
as Bill Alfonso (Manager)
(1997) ECW Fan Cam: May 2, 1997 (Barely Legal II)
as Bill Alfonso (Manager)
(1997) ECW Fan Cam: May 3, 1997
as Bill Alfonso (Manager)
(1997) ECW Fan Cam: May 16, 1997
as Bill Alfonso (Appearance)
(2000) ECW: Extreme Evolution
as Bill Alfonso (Manager)
(2001) ECW Hardcore History
as Bill Alfonso (Referee)
(2021) Battleground Championship Wrestling
as Bill Alfonso
(1996) ECW Extreme Warfare Vol. 2
as Bill Alfonso
(2002) WWA The Revolution
as Bill Alfonso
(2025) The Ref Didn’t See It!
as Bill Alfonso
(1993) WWE Bashed in the USA
as Bill Alfonso
(1994) Bret "Hit Man" Hart
as Bill Alfonso
(1993) Raw
as Bill Alfonso
(1986) WWF Wrestling Challenge
as Bill Alfonzo
(1981) Mid-Atlantic Championship Wrestling
as Bill Alfonso (Referee)