Forget that you are not male.
Are you Isabella of Aragon?

Are you Isabella of Aragon? I am not.

Were you a noblewoman?

Would you be found in a history book?

Are you a fictional character? No
Human? Yes
Male? No
Alive? No
Would the average American be aware of this individual? Maybe/Probably not
Were you a sportsman? No
Were you a politician? No
Were you in the entertainment industry? Nein
Did you die in the 20th century? Nope
Are you Spanish / German? nah (syke!)
Were you born post 1500? no
As in Spanish mother and German Father? Hard to say, my father was from the Kingdom of Valencia, my mother was from 'nearby'.

This is what we know. Since the Kingdom of Valencia was created in 1238 this person must date from between 1238 and 1500. So yes this person must be in a history book. She is most likely a noblewoman as there are not very many women from that era who were not noblewoman and who are still well known today.

Are you a Queen?

Were you a noblewoman? Certainly, a Duchess no less. (even tho I was an illegitimate child)

Would you be found in a history book? Yeah.

Are you a Queen? Negatory.

Are you Sor Isabel of Villena?

Are you Sor Isabel of Villena? niet

This forum is getting out of hand.

WHO THE HELL IS THIS PERSON?

I was sure I was right with that guess: right era, father from Valencia, illegitimate and a duchess. This is a tough one.

Nah, she is more famous than Isabel. A more famous family anyway.

Do you have a Spanish name?

Were you a Duchess of Valencia?

Real dead human female...

Would the average American be aware of this individual? Maybe/Probably not
Were you a politician? No
Were you in the entertainment industry? Nein
Are you Spanish / German? nah (syke!)
Were you born post 1500? no
As in Spanish mother and German Father? Hard to say, my father was from the Kingdom of Valencia, my mother was from 'nearby'.
Were you a noblewoman? Certainly, a Duchess no less. (even tho I was an illegitimate child)
Are you Sor Isabel of Villena? niet
Do you have a Spanish name? yes
Were you a Duchess of Valencia? no :)

Handy hint: I was married at least 3 times by the age of 22! Ah the good old days.

Did you live in the 1200s?
1300s?
1400s?

I was alive somewhere between 1475 and 1525. I did not see my 40th birthday.

I am going to make another guess. This one seems to fit the facts presented so far. In fact I am pretty sure this is right.
Lucrezia Borgia

Bazinga! Nicely played. Not the easiest person to find or to answer questions for!

"Lucrezia's family later came to epitomize the ruthless Machiavellian politics and sexual corruption alleged to be characteristic of the Renaissance Papacy.
It is rumoured that Lucrezia was in possession of a hollow ring that she used frequently to poison drinks."

You are it, Spyman.

Excellent :-)
I'll let someone else take the next turn though. Any takers? First in with buzzer.

*BZZZZZT*

(Boy, I've really got to work on my reflexes, eh?)

Guess away.

Human?
Alive?
Non-fictional?

Human? Yes
Alive? No
Non-fictional? Yes

Is it Stalin?
Is it Hitler?
Is it Jesus?

Human? Yes
Alive? No
Non-fictional? Yes
Is it Stalin? No
Is it Hitler? No
Is it Jesus? No

Male?

Someone from Europe?

Human? Yes
Alive? No
Non-fictional? Yes
Is it Stalin? No
Is it Hitler? No
Is it Jesus? No
Male? Yes
Someone from Europe? Yes

Alive after 1900A.D.?