Most of mine don't have names. The ones that do got them because of some behavior or look about them.
EEs with names:
Henny Penny...because the sky is always falling, I forgot to butter her bread, I remembered the butter but forgot the jam, the grass is green, the sky is blue... always some reason for her to be fussing, or musing about something. She walks around all day talking to herself. Weird little gal, with wonderful muffs, and just a beauty!
Liz Taylor...because she has muffs that go straightback from her face, and it reminds me of the old hair style Liz once had. She also has a beard, and is a beauty.
Eeyore...because when it was only 5-6 weeks old, my daughter's friend dropped it. Since then it's neck has been in the shape of a Z. I've tried everything to straighten it when it first happened, and nothing worked. So it has a crooked neck like Igor. Only I couldn't remember Igor at the time, and thought of Eeyore. On occasion she is called just EE now.
White Rocks with names:
Dorothy, because my great aunt has a sister named Dorothy that is just a pain.
The chicken Dorothy use to follow me around the yard, and talk the entire time. Since she started laying, she has nothing to do with me, and only talks when she sings her egg song.
She has one black feather in her wing, and I put a leg band on her so if that feather falls out, I'll still know which one is Dorothy.
Lucy...because my son named one of them Lucy when they were smaller, and they all looked alike to me. Whenever I asked which one was Lucy, I swear he chose a different one each time! Since then, one of the WR has a few hairs that stick out one her fluffy butt. They are nothing like a feather! That's the only one I can tell that's different than the others, so she just became Lucy.
I have one hen that is a WR that is broody right now, and I don't want her hatching this late in the year. Dunno what we're gonna do, but am thinking of giving her a name, and leg band. Maybe 'Big Mama'.
Black Astralorps
My only roo is called Mr. Roo. Original, eh?
Mr. Roo was purchased as a pullet, and is my only rooster.
I haven't named his mate, the only other BA I have, but have been thinking of calling her Raven.
Light Brahmas
I have two, and they don't have official names. We either call them 'The Ladies', or 'The Beauties'. DH's great aunt named them 'The Ladies' because she says they look like a lady all fixed up, going to a ball.
Amberlinks
One is 'Carmel' but don't ask me which one! My daughter named it.
My WRs were brought as straight run, and I was told by many that I would have mostly, if not all roosters, so they weren't really thought of as pets, or named, because I didn't wanna get attached. Of the 10 straight run chicks I bought that day, ALL are hens!!