What am I named?

Wilson/Philips?

Correct.

Single-handed follower of the Qin dynasty. Who is this fictional character?

Wilson Flatheads (edit:Nipped at the post)

Han Solo

Han Solo? (Wag)

Yes! The Han dynasty followed the Qin dynasty, and single-handed is a synonym for solo.

Nm, I was bragging but I see Isamu actually ninja’d me.

Let me try one. This is a most horrible, horrible pun.

As a sort of clue, my 7th grade teacher complained about the legibility of my penmanship, calling it “chickenscratch”.

I startle the chicken. What am I named?

(not a person)

Is Phillips part of the name?

Of mine? No.

Lee “Scratch” Perry & The Upsetters?

It is a famous thing with a person’s name attached to it.

Frighten (fright hen)
Peckerwood
Hen-pecked
???(WAGs)

If you mean the screwdriver/volleyball, that was mine, and it was guessed: “Wilson Phillips”.

Try a somewhat less common word for a (young-ish) chicken.

Is it Chick Corea?

Meanwhile, a new one:

This person initially started off in Kansas, and then followed the path of swindling. What is this person named?

Oz? As is ‘The Wizard of’?

Good guess, but no.

Ok, I will try to clarify.

My teacher called my penmanship “chickenscratch”.

If your chickenscratchings are very exemplary, you are awarded with me. I startle the chicken. What am I named?