Alright, this here's my official Pirates OC...

Name: Jamacia Sparrow
Nicknames: Jay, Bird (Jack calls her that to annoy her)
Gender: Female
Age during RPs: 14
Powers: None, unless she's got a cursed medallion. (In RP, she can control fire and air as long as she's not behind bars. If she ever does get captured, her powers desintigrate forever)
Blood Relationships: Sister of Jack Sparrow
Friend Relationships: Will Turner, Elizabeth Swann, Olivia Smith (OC), Barbossa (later on)
Weapons: Cutlass/Pistol
Book Title: A Sparrow Story
Appearance: Short brown hair tied back, blue eyes, scar under her left eye (blame Norrington xp ) Clothing: Blue shirt with black sleeves, white trousers, purple bandanna (it will change color on occasion), black boots, short gloves.
Likes: Sailing, anything to do with piracy or the ocean.
Dislikes: Being teased through nicknames, water deeper than twenty feet.
Enemies: Barbossa (later on friends), James Norrington (later on they simply become allies, not friends, but not enemies), Lord Cutler "Buckett", Davy Jones.
Hobbies: Daydreaming about becoming a Pirate Lord.