From Wikipedia
Guinn Terrell Williams Jr. (April 26, 1899 – June 6, 1962) was an American actor who appeared in memorable westerns such as Dodge City (1939), Santa Fe Trail (1940), and The Comancheros (1961). He was nicknamed "Big Boy" as he was 6' 2" and had a muscular build from years of working on ranches and playing semi-pro and professional baseball.
Williams made his screen debut in the 1919 comedy, Almost A Husband, with Will Rogers and Cullen Landis, and was featured in a large supporting role ten years later in Frank Borzage's Lucky Star with Janet Gaynor and Charles Farrell. Throughout the 1920s Williams would have a string of successful films, mostly westerns.
He then appeared in The Great Meadow alongside Johnny Mack Brown, which was Brown's breakout film. Throughout the 1930s, Williams acted in supporting roles, mostly in westerns, sports, or outdoor dramas. Although not the lead actor in any of them, he was always employed, and was successful as a supporting actor. He often played alongside Hoot Gibson and Harry Carey during that period. In 1941, he became one of many actors cast by Universal Pictures in their large film series, Riders of Death Valley. From the late 1930s to the mid-1940s, Williams appeared in supporting roles in a number of A-pictures, sometimes with high billing, such as You Only Live Once, and in Columbia's first Technicolour film The Desperadoes (1943).
Williams was frequently teamed with Alan Hale, Sr. as sidekicks to Errol Flynn in several of his pictures. In 1960, he was cast in the epic film The Alamo and in Home from the Hill with Robert Mitchum. His last role was opposite his close friend John Wayne and Stuart Whitman in The Comancheros.
Movies
Santa Fe Trail
Windy Brody
American Empire
Sailaway
A Star Is Born
Posture Coach
Mr. Wise Guy
Luke Manning
Castle on the Hudson
Mike Cagle
You'll Never Get Rich
Kewpie Blain
The Glass Key
Jeff
Station West
Mick Marion
Man in the Saddle
Bourke Prine
The Littlest Rebel
Sgt. Dudley
Belle of the Yukon
Sheriff Mervin Maitland
Swamp Water
Bud Dorson
Dodge City
Tex Baird
Rocky Mountain
Pap Dennison (CSA)
Cowboy and the Senorita
'Teddy' Bear
Road to the Big House
Butch McQuinn
Big City
Danny Devlin
You Only Live Once
Rogers
Hands Across the Border
Teddy Bear
Hangman's Knot
Smitty
Street of Missing Men
T-Bone
Minesweeper
CPO Ichabod Ferdinand 'Fixit' Smith
Man from Del Rio
Fred Jasper
Flirtation Walk
Sleepy
Noah's Ark
Al Wilson / Ham
The Devil Is Driving
Mac
Lucky Star
Sgt. Martin Wrenn
Private Worlds
Jerry Stone
Blackmail
Moose McCarthy
Rafter Romance
Fritzie
Springfield Rifle
Sgt. Snow
Billy the Kid
Ed Bronson (blacksmith)
Kelly the Second
Cecil Joseph Callahan
Al Jennings of Oklahoma
Lon Tuttle
The Phantom
Dick Mallory
Big Boy Rides Again
Tom Duncan
Heritage of the Desert
Lefty
The Ropin' Fool
The Foreman
The Hired Gun
Elby Kirby
Wise Girl
Mike
The Mystery Squadron
Bill 'Jellybean' Cook
Miss Pacific Fleet
Nicholas 'Nick', Annie's Boyfriend
Black Cyclone
Jim Lawson
Man of the Forest
Big Boy
Song of the Prairie
Big Boy Jackson
The Law of 45's
Tucson Two-Gun Smith
Army Girl
Ross
Cowboy Holiday
Buck Sawyer
Grand Jury
Joseph Britt
The Vigilantes Are Coming
Salvation
The Man Who Walked Alone
Champ
Here Comes Cookie
Big Boy
Money and the Woman
Mr. Adle
The Big Game
Pete Jenkins
Dangerous Holiday
Duke Edwards
Flying Fists
Slug Cassidy
Bad Lands
Billy Sweet
Gun Play
Bill Williams
One in a Million
Spike McGafferty
The Silver Streak
Higgins
Hold That Co-ed
Mike Wurgerski
The Big Fight
Tiger
Brimstone
Art Benson
Crashing Through Danger
Slim
Five Bold Women
'Big Foot' - the wagon driver
Southwest Passage
Tall Tale
Massacre Canyon
Pvt. Archibald Allen
Everybody's Doing It
'Softy' Blane
Nevada
Dusty
The Bad Man of Brimstone
Vulch McCreedy
The Forward Pass
Honey Smith
6,000 Enemies
Maxie
She's No Lady
Jeff
My Dear Miss Aldrich
An Attendant
The Singing Marine
Dopey
Danger Trails
Bob Wilson
Cupid the Cowpuncher
Hairoil Johnson
Here Comes the Navy
Dance-Floor Manager
Thunder Over Texas
Ted Wright
Palooka
Slats (uncredited)
The Trail of Hate
Silent Kerry
The Alamo
Lt. 'Irish' Finn
The Fighting 69th
Paddy Dolan
Don't Tell the Wife
Lazarus "Cupid" Dougal
War Mamas
Doughboy
Catch-As Catch-Can
Strangler Sullivan
Alias the Deacon
Bull Gumbatz
You Said a Mouthful
Swimming Champion Joe Holt (uncredited)
Virginia City
Marblehead
That Texas Jamboree
Big Boy Frazer
Mutiny on the Blackhawk
Blake - the First Mate
Professor Beware
Motorcycle Cop
The Undie-World
Bugsy McHugh
Pleased to Mitt You
Chuck Brenner
Hoedown
Small Potatoes
Wagons Westward
Jake Hardman
Smoky River Serenade
Wagon Wheel (as Big Boy Williams)
The Comancheros
Ed McBain - Gunrunner (uncredited)
The Jack Rider
Frank Stevens
The Vengeance Trail
Big Boy Bronson
Western Firebrands
Billy Fargo
Across the Border
Andy Fowler
Rounding Up the Law
Larry Connell
The Cowboy King
Dud Smiley
Remembrance
Blaze Away
Big Boy
The Freshie
Charles Taylor
Country Fair
Gunther Potts
The Desperadoes
Nitro Rankin
The Outlaw's Daughter
Moose, Deputy
Singing on the Trail
Big Boy Webster
Society Fever
Edgar Prouty
The Bachelor Father
Dick Berney
Girls Can Play
Det. Lt. Ed Flannagan
Powdersmoke Range
Lullaby Joslin
End of the Trail
Bob Hildreth
North of Nome
Haage
The Bad Man
Red Giddings
Riders of Death Valley
Borax Bill
Down in 'Arkansaw'
Juble Butler
Pardon Our Nerve
Samson Smith
Legion of Lost Flyers
Jake Halley
Lure of the Islands
Jinx
Swing in the Saddle
'Tiny' Baldwin
Six Lessons From Madame La Zonga
Alvin
Between Us Girls
Father at Soda Fountain
Wolfheart's Revenge
Jack Stanley
Cowboy Canteen
Spud Harrigan
Polly of the Circus
Eric
College Coach
Matthews
The Marines Are Here
Sgt. Gibbons
My Man
Joe Halsey
Smoky Mountain Melody
Saddle Grease Williams
Silver Queen
Blackie
Rhythm Round-Up
Zeke Winslow
Sing Me a Song of Texas
Big Boy
Cowboy Blues
Big Boy Stover
Throw a Saddle on a Star
Big Boy
King of the Wild Horses
Jed Acker (as Big Boy Williams)
Over the Santa Fe Trail
Big Boy Jackson
Bad Men of Tombstone
Red Fisk
Dulcy
Henry
Hidden Guns
Kingford
Career Woman
Bede Sanders
Ladies of the Jury
Steve Bromm (uncredited)
Godless Men
Seaman
The Champ's a Chump
Spike
From Headquarters
Gunnery Sgt. Wilmer (as Guinn Williams)
Liliom
Hollinger
The College Widow
Don White (as Big Boy Williams)
Vamping Venus
Mars
The Bugle Sounds
Sgt. Krims
Snowbound
Bull Morgan
70,000 Witnesses
Connors
Boys Will Be Boys
Butch
Half a Sinner
'Bull' Moran
Romance in the Rain
Panya Mankiewicz
Singin' in the Corn
Hank
Burning Daylight
English Harry (as Big Boy Williams)
The Eagle's Claw
Dan Carson
Stars on Horseback
I Demand Payment
Happy Crofton
The Desert's Toll
Henchman
The Phantom Broadcast
Sandy Higgins
Babe Comes Home
Baseball Player (as Big Boy Williams)
Arizona Bound
Cowboy
Lightning
Cuth Stewart
Fugitive at Large
Conway (as Guinn Williams)
Jubilo
Man Shooting Pool with Bert (uncredited)
Fangs of Wolfheart
Bad Man from Bodie
Rose of the Desert
Cowboy (as Big Boy Williams)
Courage of Wolfheart
The Big Stunt
The Woman Who Did Not Care
Lars
Slide, Kelly, Slide
McLean
You and Me
Text (as Guinn Williams)
Village Tale
Ben Roberts
Cyclone Jones
Cyclone Jones
Riders at Night
End of the Rope
Uncensored Movies
$1,000 Reward
The Avenger
Nat Sherwood
Red Blood and Blue
Tom Butler
Sporting West
Whistling Jim
Whistling Jim
Riders of the Sand Storm
The Cowboy
Almost a Husband
Quarantined Rivals
Joe, the plumber
Backstage
Mike Donovan
The Down Grade
Ed Holden
Ladies' Night in a Turkish Bath
Sweeney
City Girl
Reaper
College Lovers
Tiny Courtley
The Great Meadow
Rubin Hall
Running Hollywood
Scratchface Henchman
Drifting Souls
Bing
Laughing at Life
Jones
Cheaters
Detective Sweeney
Muss 'em Up
'Red' Cable
Love on a Bet
Undetermined Secondary Role (scenes deleted)
Mr. Bug Goes to Town
Narrator (voice) (uncredited)
Fremont: The Trailblazer
Cassidy
Buttons and Her Beaus
Home from the Hill
Hugh Macauley (uncredited)
Beggars of Life
Baker's Cart Driver (uncredited)
Brown of Harvard
Hal Walter
Shows
Gunsmoke
Groat
The Adventures of Wild Bill Hickok
Tulsa Jack
Circus Boy
Cheyenne
Prairie Dog
The Restless Gun
Jeff Bonsell
Sugarfoot
Moose McKlintock
Walt Disney's Wonderful World of Color
Buffalo
Wagon Train
Calvin Bryngelson
Wells Fargo
Mike Forbes
The Adventures of Rin Tin Tin
Sgt. Muldoon
U.S. Marshall
Jones
My Friend Flicka
Jeb Taylor
The Life Of Riley
Finnegan