Dude, it sounds really interesting :)
Name: Gwendolyn Winters
Age: 17
Social status (middle class, royalty, nobility, peasant etc etc): Royality
Give me a title for who you are (example: Duke of, Prince of...) Princess Gwen, Lady of England (that can change if you need it to)
Country you're character is from: Northern Ireland, originally
Personality: willing to go on any adventure, very rebellious, great liar. She's a leader, not a follower. She wants to see the outside world more than she does, so she often goes through town dressed as a peasant. She hates her social status and the stereotype of most women are given.
Favorite colors: green and silver
Likes: Archery, reading, secrets, sneaking out, acting as someone else
Dislikes: the Royal Court, her stepmother, anyone who tells her what to do or how to dress and being compared to her twin
Any back story?: Born in Ireland, raised by maternal grandmother until it "was their time to come back to England," at age eight. her father is a high and mighty king, whose first wife (Gwen's mother) died of ingested poison. He later remarried to a wicked women, who always tried to make Gwen a proper lady. She gave birth to a son, William, who will have inheritance over the throne before Gwen and her brother.
Other: Gwen has really light, almost white, blonde hair, that's just below the shoulders, parted to the left. Icy blue eyes with white flecks. Fair skin which her makeup stands out against- dark red lipstick and black eyeliner. 5'6, slim.
Name: Oliver Winters
Age: 17
Social status (middle class, royalty, nobility, peasant etc etc): Royality
Give me a title for who you are (example: Duke of, Prince of...) Prince Oliver, Lord of England (once again, that can change)
Country you're character is from: Northern Ireland, originally
Personality: hesitant to break the rules, nervous about making decisions, definitely a follower. He's the worst liar ever, and he always ends up covering his sister's tracks. He follows his sister though, just to make sure she'll be okay. He's shy and a little nerdy. Basically the polar opposite of Gwen, but he does have a fun side once in while.
Favorite colors: red and gold
Likes: long walks, reading, archery, making his father proud
Dislikes: getting in trouble, being a disappointment, his stepmother
Any back story?: same as Gwen's ^
Other: Oliver has dark red hair, like a cherry color, and it's sort of short. He has the same icy blue eyes as Gwen. Fair skin with a good number of freckles on his cheeks. Very lean and slim, 5'10.
I guess you don't have to use both characters, but I think it'd make more sense to. Anywho, love the idea and I can't wait to read it :D