Not George Washington, not Wendy Williams and dunno.
Not Henry Wallace, not William Wilberforce and dunno.
Dunno x3.
#1 was Wendell L. Willkie.
#2 was Isaac Watts.
#3 was Charlie Weaver.
DQs:
- Real?
- Male?
- Last name starts with W?
W.
- fictional
- female
- first name starts with W
- was William Wallace. Correct on Wendy O. Williams. 3 is Wade Wilson, otherwise known as Deadpool, played by Ryan Reynolds. W.W. x 3!
DQs:
1.From literature?
2. Last name starts A - M?
IQs:
- Are you the cartoon version of a character played by Audrey Meadows?
- Did you write The Moonstone?
- Did you marry the roommate and amanuensis of the world’s first consulting detective?
- Are you the mother in the comic strip Baby Blues?
- Did you voice Kronk in The Emperor’s New Groove?
- Did you write, among other stories, the stories of John the Balladeer?
#1 was Willie Wilson, #2 was Kit Walker (the ghost who walks), #3 was Noah Webster.
3 DQs reserved. (Make 'em a Blizzard, a soft-serve and a Dilly Bar!)
Duh, Webster, of course! 
Not Wilma Flintstone, Wilkie Collins or Mrs. Mary Morstan Watson.
Not Wanda, Patrick Warburton or Wallace.
W.
- fictional
- female
- first name starts with W
- not from literature
- last name unknown
DQ1: From a work created since 1950?
DQ2: From television?
1 DQ reserved.
IQs:
- Are you a Grammy-winning guitarist with “Weird Al” Yankovic?
- Did Kevin Kline win an Oscar for playing you in A Fish Called Wanda?
- Did you write O Pioneers?
Correct, correct, Manly Wade Wellman.
IQs:
1.Did you play Scott McCall in the 1980s TV series The Equalizer?
2. Did you play Vicki on The Love Boat?
3. Were you Jack’s wife in The Shining?
1 DQ reserved
IQs:
- Did you write Ben Hur?
- In DC Comics lore, were you the first member of the Seven Soldiers of Victory to die?
- Were you a serious BBC news presenter who also provided the posh talk for the highly acclaimed semi-neurotic, all-inclusive, tin-plated 1950’s British radio series The Good Show?
Dunno, not Otto W., and not Willa Cather.
Not Edward Woodward, dunno and not Wendy.
Not Lew Wallace, dunno and dunno.
W.
- fictional
- female
- first name starts with W
- not from literature
- last name unknown
- from a work created since 1950
- not from television
William Zabka, not Edward Woodward (he was Robert McCall), Jill Whelan, correct.
DQ:
From a movie?
Two DQs reserved
#1 is correct.
#2 was Wing.
#3 is, of course, Wallace Greenslade. 
2 DQs reserved.
Swept me!
- Do you play Q in most of Daniel Craig’s Bond films?
- Are you the Germanic counterpart of Hephaestus and Vulcan?
- Were you a child actor who redeemed your much-hated character in a popular sci-fi universe, by playing yourself with self deprecating humor in another hit show?
Not Ben Whishaw (sp?), Wotan or William (Bill) Mumy of both Lost in Space and Babylon 5.
W.
- fictional
- female
- first name starts with W
- not from literature
- last name unknown
- from a work created since 1950
- not from television
- not from a movie
DQ: from a play?
Jim West, Otto West, and, yes, Willa Cather, who wrote books about the Old West.
1 DQ reserved.
IQs:
- Were you played by both Robert Conrad and Will Smith?
- Did you play Cannon in the TV show of the same name?
- Did Marg Helgenberger play you on CSI?
Correct on Ben Wishaw. Vulcan’s nearest Germanic equivalent was Wayland Smith. I’ll accept Bill Mumy, but I was actually thinking of Wil Wheaton, the obnoxious Wesley Crusher on Star Trek: The Next Generation, and then himself on The Big Bang Theory.
DQ:
- Animated?
DQ: From a song?
1 DQ reserved.
SMV, I’d overlooked the “playing yourself with self deprecating humor” part of your question, and Mumy didn’t do that in Babylon 5, so please take another DQ.
Not Jim West of Wild Wild West, not William Conrad, and not Detective Pretty (to quote TV Tropes). Don’t know her “W” character name, though.
W.
- fictional
- female
- first name starts with W
- not from literature
- last name unknown
- from a work created since 1950
- not from television
- not from a movie
- not from a play
- not animated
- from a song