Diana

Diana was a Petrova doppelgänger and seer with whom Niklaus Mikaelson fell in love in the late 10th/early 11th century. She is the first-known doppelgänger to be created from Athina's line after her earliest known ancestor was turned into a true immortal in the 1st century B.C. Elijah and Niklaus' mother used Diana and Tatia's blood to turn them into the world's first vampires, which eventually led to Tatia's death at the newly-turned Elijah's hands. Her blood mixed with Tatia's was used in the spell that bound Niklaus' werewolf heritage.

Early History
During the Middle Diana lived in a small village with her older twin siser, Tatia, Tatia's Viking husband and her niece. After her sister's husband ultimately died in battle, she became a big help with raising her niece. Later in time, she met the Mikaelsons and fell in love with Niklaus Mikaelson. Esther, the mother of Elijah and Niklaus, used a miture of her and Tatia's blood in a spell that turned her children into the original vampires.

After the Mikaelson children's transformation, Diana received a vision of Elijah over come with his newborn bloodlust killing her sister. By the time she arrive to the scene it was too late. Diana took Tatia to Esther in hopes she would help however Tatia had already died by this time. Esther asked Diana for her blood one last time to help tame the beast in Niklaus. Due to her love for Klaus, she agreed to help. Esther used a mixture of Tatia and Diana's blood to cast the hybrid curse on Klaus in order to bind his werewolf side.

After Tatia's death, Diana was tasked with looking after her niece, so packed her things and fled. She spent the next few years moving from village to village looking for any work she could in order to provide for her niece. She soon fell in love with the son of a local blacksmith, Abel, the doppelganger of Silas. The two got married and produced two kids of their own.

Physical Appearance
Diana was a beautiful young woman with an oval face, almond-shaped brown eyes, and wavy, long dark brown hair which, like many women in the Middle Ages, was often worn in many braids. Her height was about 5'7 and she had a slim, slightly athletic physique. Diana was exactly physically identical to her distant ancestor Athina and her descendats Vivienne Pierce and Louise Gilbert. She also shares a similar appearance to her twin sister, Tatia and her doppelgangers; Amara, Katerina Petrova and Elena Gilbert.

Relationships

 * Klaus and Diana (Former Lovers)
 * Elijah and Diana (Old Friends)
 * Tatia and Diana (Sisters)

Name

 * Diana is derived from an old Indo-European root meaning "heavenly, divine". Diana was a Roman goddess of the moon, hunting, forests, and childbirth, often identified with the Greek goddess Artemis.

Trivia

 * In Bringing Out The Dead, Elijah Mikaelson mentioned that they met Diana and Tatia after they moved to the New World. That indicated that she was born in the New World.
 * She, Tatia, Elena and Louise are the only known Petrova doppelgängers to be born in the New World. Their progenitor, Athina and Amara, were born in the Old World (presumably Greece) as well as Viviana and Katerina Petrova, who were born in Bulgaria.
 * She celebrated Samhain, a Celtic festival and the early origins of Halloween, which suggests that she was of Celtic descent and had immersed herself in the Viking culture upon marrying an unnamed Viking.
 * She is the fourth doppelgänger that Victoria played.
 * Her and Tatia's blood was used both in the spell that turned Mikael and his children into the Original vampires as well as in Klaus' hybrid curse, which Esther put on him to bind his werewolf heritage and keep him from being a true hybrid.
 * Diana and Louise Gilbert share some similarities.
 * Both have been residents of what is now Mystic Falls.
 * Diana is the first doppelgänger of Athina, while Louise is the last.