The Olympic Coven (The Cullens) located in the Olympic Peninsula (Forks, Washington) who think of tehmselves as "vegetarians" because the only feed off of animal's blood not human's
Alice Cullen frozen at age nineteen was created by James a tracker who was killed by Edward Cullen in the first book Twilight Alice has the Supernatural power of being able to see the future but only after a decision leading to the event is made her visions are not definite.
Carlisle Cullen is the leader of the Olympic Coven and Created all of them except for Alice and Jasper. Sarlisle is over three-hundred years old and has no supernatural power, he was created by another vampire who was blood thirsty in the 1600's (i think...) not happy with his new life he tried to kill himself many times despite the fact that he was now immortal. He worked many years to become a doctor and resist the temptation of human blood, he created Edward in 1918 when he and his mother were both dying of the Spanish Influenza and Edward's mother demanded that he do anything he could to save Edward. Carlisle believes that Edward, Jasper, and Alice's supernatural powers were based on traits they had in their past lives.
Edward Cullen was created at age seventeen by Carlisle Cullen who is the leader of the Olympic Coven. Edward has the power to read people's thoughts the closer they are the easier it is for him. If the person whose mind he is trying to read is far away the more familiar there voice is to Edward the easier it is for him to read their mind.
Emmet Cullen is extremely strong and has no supernatural power. He was also created by Carlisle after Rosalie brought him to Carlisle after a near death experience (I can't remember exactly what happened).
Jasper Hale was created by Maria a girl he met in his human life in Texas Maria created him to join their coven years later a friend of his convinced him to leave the coven, he left and met Alice Cullen who told him about the Olympic Coven and how they were different (vegetarian). Jasper has a supernatural power, the ability to change somebodys mood or tell what they're feeling.
Esme Cullen is over was born in 1895. She has no supernatural power. She was created by Carlisle after she almost died from jumping off a cliff in her human life after losing a child.
Rosalie Hale was created by Carlisle Cullen who created her after she was almost killed in the 1930's by her fiance Royce. Rosalie has no supernatural power.