I’m sorry, I don’t know to whom you refer
pass on all 3
1: I am not Bloomer and have to guess at her first name… Amelia?
3: I don’t know to whom you refer
But this current display of my ignorance is at an end, for although she was not my mother but my stepmother, she took fewer than forty whacks and there was sufficient doubt as to the question of whether I gave her them that I was aquitted, number 2 does refer to me - I am Lizzie Borden. Congratulations, SCAdian.
Well done, SCAdian!
If I hadn’t started listening to Chad Mitchell whilst thinking of IQs… 
Yes, Amelia Bloomer, and #3 was Barbara Fritchie.
I had a good ‘W’ picked out the other day, but I can’t remember who it was. 
So let’s go with
G
IQ: Were you a “Plumber”?
My Previous IQ was James Braddock, BTW
IQ1: Did a singer express a desire to ride in your Cadillac?
IQ2: After your husbands death, did you marry his brother who was the likely cause of said death?
IQ3: Did your slaying prompt your mother to seek revenge?
Not G Gordon Liddy.
Three DQs.
1: Whoah, boys - take me back. I wanna ride in Geronimo’s Cadillac.
2: Hamlet’s mother, Queen Gertrude of Denmark
3: Grendel
IQ: Is your autobiography the gold standard of Presidential memoirs?
DQ1: Real?
DQ2: Male?
DQ3: Reserved for now.
DQ.
G
Way to go, SCAdian!
Previous round IQs:
Did you have to wear fur in your best-known role? - Bert Lahr, who played the Cowardly Lion in The Wizard of Oz.
Were you known for belting out a particular patriotic song? - Bessie Smith, known for her full-throated renditions of “God Bless America”
Were you briefly known as “Mrs. Nesbit”? - Buzz Lightyear, dispiritedly forced to take part in Sid’s sister’s doll tea parties in Toy Story.
And now…
IQs:
Was your best-known battle at Guilford Court House?
Were you a head of state indirectly related to an early nautical ally of the U.S.?
Did you do early production artwork for a film version of Dune that never got off the, er, sand?
That’s US Grant
DQ: Living?
IQs:
IQ: Did you form a comedy duo with your husband, and predecease him by a couple decades?
IQ: Did you have a fairy tale wedding with a prince from a small European nation?
IQ: Did you coach the “Over the Hill Gang”?
Not … Nathaniel Greene?
DQ.
DQ.
Not Geraldine.
Not Gladys Knight.
DQ.
Not Gracie Allen.
Not Grace Kelly.
DQ.
G
George Allen coached the Washington “football team” 
during the 70’s. they were dubbed “The Over the Hill Gang” due to the advanced age of the players
DQ: Died after 1900?
IQ: Are you a major dance figure I’ve asked about in previous rounds?