Jenny Bonny O'Malley
There isn't a distinct history to Jenny. She's completely fictional and thrives on more of a fantasy view of pirates, rather than historical. Unofficially, she is the illegitimate daughter of Anne Bonny and Calico Jack, as well as the granddaughter of Grace O'Malley. As you can see, if you know about the above, that it is impossible for Jenny to have ever existed in reality.
But in fiction... age is in her mid 20s. (And will be forever! lol) She was born in the west of Ireland, raised partly by her grandmother Grace, who encouraged Jenny's natural love for the sea. She learned to sail and could read maps better than anyone. She quickly put those abilities to use and earned her current position of Navigator aboard the Merry Raven serving under Captain Jack, whom she admires for his excellent taste in clothing.
So what is she like otherwise? In looks, she's rather plain, with long reddish brown hair and dark eyes. She tends to be quiet, preferring to observe and listen. However, get a bit of rum in her, and it can be quite a different story!
Rumor has it that she is involved with a pirate aboard an opposing ship.