William Frawley was born in Burlington, Iowa. As a boy he sang at St. Paul's Catholic Church and played at the Burlington Opera House. His first job was as a stenographer for the Union Pacific Railroad. He did vaudeville with his brother Paul, then joined pianist Franz Rath in an act they took to San Francisco in 1910. Four years later he formed a light comedy act with his new wife Edna Louise Broedt, "Frawley and Louise", touring the Orpheum and Keith circuits until they divorced in 1927. He next moved to Broadway and then, in 1932, to Hollywood with Paramount. By 1951, when he contacted Lucille Ball about a part in her TV show I Love Lucy (1951), he had performed in over 100 films. His Fred Mertz role lasted until the show ended in 1960, after which he did a five-year stint on My Three Sons (1960). Poor health forced his retirement. He collapsed of a heart attack on March 3, 1966, aged 79, walking along Hollywood Boulevard after seeing a movie. He is buried in San Fernando Mission Cemetery.
Movies
Blondie in Society
Waldo Pincus
Blondie's Anniversary
Sharkey the Loen Shark
Blondie's Hero
Marty Greer
Lady on a Train
Desk Sgt. Brennan
The Fighting Seabees
Eddie Powers
Roberta
Bartender
The Princess Comes Across
Benton
The Lemon Drop Kid
Gloomy Willie
Miracle on 34th Street
Charlie Halloran
Red Light
Hotel Night Clerk
Welcome Home
Painless
Bud Abbott and Lou Costello Meet the Invisible Man
Det. Roberts
Flame of Barbary Coast
Wolf Wylie
Rancho Notorious
Baldy Gunder
One Night in the Tropics
Roscoe
Rhubarb
Len Sickles
The Babe Ruth Story
Jack Dunn
Gentleman Jim
Billy Delaney
Rose of Washington Square
Harry Long
Mad About Music
Dusty Turner
Footsteps in the Dark
Det. 'Hoppy' Hopkins
The Crime Doctor
Fraser
Kiss Tomorrow Goodbye
Byers
The Inner Circle
Det. Lt. Webb
Rose Bowl
'Soapy' Moreland
Professor Beware
Snoop Donlan
Whistling in Brooklyn
Detective Ramsey
Double or Nothing
John Pederson
Something to Sing About
Hank Mayers
Roxie Hart
O'Malley
Crime Doctor's Man Hunt
Police Inspector Harry B. Manning
The Adventures of Huckleberry Finn
The 'Duke'
Desire
Mr. Gibson
The Virginian
Honey Wiggen
Mother Wore Tights
Mr. Schneider
Moonlight and Pretzels
Mac
Rhythm on the River
Mr. Westlake
Golden Gloves
Emory Balzar
Strike Me Pink
Mr. Copple
The Dirty Look
Alibi Ike
Cap
The Lady Takes a Sailor
Oliver Harker
Safe at Home!
Bill Turner
Here Is My Heart
James Smith
Pretty Baby
Corcoran
The Lone Wolf and His Lady
Inspector Crane
Ventriloquist
'Hoak' salesman
Bolero
Mike DeBaere
Chicken Every Sunday
George Kirby
Blossoms On Broadway
Francis X. Rush
Shoot the Works
Larry Hale
Moonlight in Havana
Barney Crane
Miss Fane's Baby Is Stolen
Captain Murphy
Sons of the Legion
Uncle Willie Lee
The Witching Hour
Jury Foreman
Three Married Men
Bill Mullins
College Scandal
Chief of Police Magoun
Dancing on a Dime
Mac
Car 99
Training Sgt. Barrel
We've Never Been Licked
Traveling Salesman
Texas, Brooklyn & Heaven
Agent
Hitchhike to Happiness
Sandy Hill
Wildcat
Oliver Westbrook
F-Man
Detective Rogan
The Bride Came C.O.D.
Sheriff McGee
My Wild Irish Rose
William Scanlon
Should Husbands Be Watched?
Beat Cop
High, Wide and Handsome
Mac
Cracked Nuts
James Mitchell
Down to Earth
Police Lieutenant
Those Were the Days!
Prisoner
I Wonder Who's Kissing Her Now
Jim Mason
Grand Jury Secrets
Bright Eyes
The Farmer's Daughter
Scoop Trimble
Gangs Of The City
Bang
Untamed
Les Woodbury
Hell and High Water
Milton J. Bunsey
Going My Way
Max Dolan (Publisher) (uncredited)
Rendezvous with Annie
General Trent
It's a Great Life
Lt. McNulty
Treat 'Em Rough
'Hotfoot'
Monsieur Verdoux
Jean La Salle
It Happened in Flatbush
Sam Sloan
Harmony Lane
Edwin P. 'Ed' Christy
Stop, Look and Love
Joe Haller
Ambush
Inspector J.L. Weber
Persons in Hiding
Alec Inglis
Touchdown, Army
Jack Heffernan
The Quarterback
Coach
Six Lessons From Madame La Zonga
Chauncey Beheegan
Give Out, Sisters
Harrison
Larceny with Music
Mike Simms
St. Louis Blues
Major Martingale
East Side, West Side
Bill the Bartender
I Love Lucy: The Movie
Fred Mertz
Home in San Antone
O'Fleery
Good Sam
Tom
Lake Placid Serenade
Jiggers
Kill the Umpire
Jimmy O'Brien
The Lemon Drop Kid
William Dunhill aka The Professor
The General Died at Dawn
Brighton
Sandy Gets Her Man
Police Chief J. A. O'Hara
Lucy's Really Lost Moments
Fred Mertz
The Yankee Doodler
Night Work
Bruiser Brown
Ex-Champ
Mushy Harrington
Joe Palooka in Winner Take All
Knobby Walsh
Ziegfeld Follies
Martin (segment "A Sweepstakes Ticket")
Opened by Mistake
Matt Kingsley
Hold 'Em Yale
Sunshine Joe
I Love Lucy Christmas Special
Ship Cafe
Briney O'Brien
The Girl from Manhattan
Mr. Bernouti
Shows
My Three Sons
Bub O'Casey
The Lucy–Desi Comedy Hour
Fred Mertz
The Lucy Show
Trainer
I Love Lucy
Fred Mertz
Westinghouse Desilu Playhouse
This Is Your Life
Self
Letter to Loretta
Sam
The Ed Wynn Show
Self
The Bob Hope Show
Self
The Ed Sullivan Show
Self
The Tonight Show Starring Johnny Carson
Self
The Gale Storm Show
Jim Comstock
I Love Lucy: Colorized Collection
Fred Mertz