Erielle is the alternative for 'Arielle,' often associated with the little mermaid, or in some parts of the USA is the name of a TV antenna. Erielle is pronounced the same way you would pronounce the lake: "Erie-elle." It is a name with no correlation to the famous lake, and is not the name of a TV antenna. But rather, it is a name that is unique in it's own right.
Tom: "Honey, I just don't know what we should name the baby, I'm completely out of ideas."
Susie: "I know Tom, why don't we name her Erielle?"