Yes, my dad use to use names like that, especially with my sister.
As you mentioned, Irish, Scottish, English, Native American maybe a 1/16, also Prussian German, and who knows. I can sympathize with the Crawfish. He has his hands full with that combo. Bet she's a sweetie.
And yes, before the Declaration of Independence, circa 1650, when the royalist decided to not lose their heads, some came to the new lands, the colonies.
No, no blog. I am a commenter. Neither the time nor real ambition to sit around writing and wonder if anyone cares. I do critique a friends blog. He's a doctor from Birmingham, Aaalabamah. Just funnin. I didn't develop a southern accent until I left the south. Must have been some kind of self defense mechanism.
http://www.ronalbright.com/You might like what he writes. He is very patriotic, but has too large a vocabulary which I occasionally remind him. Check out his latest, "Message in a Bottle".
He's fabulous, and writes some great material.