That reminds me of when I first met my then-boyfriend, now-husband's sister. She was talking about some family members, and she referred to them as "Annie Bell", "Annie Bev", "Annie Carol", etc.
Later, I said to Mr.S "Gee, your family has a lot of Annies. Is it a family name?" He began to laugh, saying "Nope - that's Rhonda's way of pronouncing "Auntie"."
(For the record, Rhonda wasn't a little kid - she was in her twenties. I guess she'd always pronounced "Auntie" that way and never got out of the habit.)