Jacqueline

While modern usage of Jacqueline as a popular English name probably goes back to the 19th century, in the spelling we might think the only proper one, it was previously used in England up until the late 16th and early 17th century when it died out (many older names stopped being used around that time due to the influence of the Reformation). And it was often spelled in surprisingly "kre8tive" ways, but actually just closer to English pronunciation than the essentially French Jacqueline, such as Jacolyn and Jacolin. But the truly interesting ones are Jacomyn or Jackamyn, which seem peculiarly English and have a certain medieval charm.

My middle name is Jacqueline and I like it. Another meaning is protector.

Jackie used as short for Jacqueline, the female form of Jacob and James, shows how the nickname "Jack" is in origin linked to Jacques and all his cognates around the world; the "Jankin's" theory says that Jack is only a nickname for the "Johns" but it's clear that it doesn't work at all. So, if one of the "Jacobs" would like use "Jack" or "Jacky" as a short forms for his name he can do that without problems. Tradition and etymology are different in this case. Another evidence: In French, Jacky or Jackie, are used as a pet forms for both Jacques and Jacqueline from the Jacob's family.

I don't know whether this is true or not, but one of the meanings I was told for this name is 'follower.'