"I'm her guardian angel, and I'll protect her to the end of eternity" ~ Emily to God
Emily Darkvane Sparrow is the daughter of Captain Jack Sparrow on Earth. She was sent here as the war between Lucifer and God broke out and is originally the daughter of the angel Castiel.
Emily Darkvane has one brother in heaven name Jason. He ran away from heaven at the age of 10 years old and only recently returned to his family.
Emily always puts Raven Potter and Damien Thorn, her best friends and the people whom she is a guards as a guardian angel angel to, as her first priority.
When Emily and her human sister were 7 and living on Earth, Lord Cutler Beckett of the East India Trading Company had come to Tortuga Island in the Caribbean to arrest their father for crimes committed against the crown. Jack had refused to leave and Emily and Angel offered themselves up to Lord Beckett instead. The twins were taken to Port Royal and put in jail, but as they had committed no crimes were let free to be citizens under the crown.
When Emily got older, her and her sister Angel Darkvane Sparrow were brainwashed by the cursed Jolly Roger, the most feared pirate in all the Caribbean. He made them forget who Jack Sparrow was and made them think he was their father and Jack was their enemy.
Emily and her sister were saved by Jack and began to live on the seas and Tortuga with him, but wouldn't go against England in any way.
Not long after she returned home did she receive a letter from a completely different time period, bearing the Hogwarts crest on it. She discovered her and her sister were to be sent to Hogwarts School of Witchcraft and Wizardry. Both of the girls were put in the House of Slytherin.
Years later, Emily met Castiel, her father from heaven and her older brother Jason. Her brother and father disliked each other and she managed to get them to get along along with discovering that her brother cared about her more than anyone in existence.
Now, Emily spends her time with Raven Potter, Damien Thorn, Jason, Castiel, as well as the other members of the club.