In looking through census records, I found my great grandmother Mabel listed in the 1910 census as Maybelle. I chalked that up to the whim of the census taker. A few weeks ago I came across my grandmother's wedding book and was so very surprised to see this
Under Witnesses, the bride's mother has written her name as Maybelle! So, perhaps for a time in her 30's and early 40's, she fancied a different spelling of her name!