Sirelines

A Sireline is a figurative bloodline of vampires or hybrids and the chain of those by whom they have been sired. If the originator of a bloodline is permanently killed with a White Oak Stake, or by other means, everyone in their bloodline dies within a few hours. It was a powerful and sophisticated link added to the immortality spell by Esther as a method of further protecting her children.

Finn, Kol, Rebekah, and Vivian are the four living Originals with and without a sireline, respectively. As such, all remaining vampires are either from Klaus' unlinked sireline or from Rebekah and Vivian's sireline, as it remains unknown if Kol has turned any other vampires following his resurrection. There is yet to be any vampires sired from an Enhanced or an Upgraded Original vampire.

Finn Mikaelson

 * Sage †
 * Troy †
 * Many Unknown Vampires †

Elijah Mikaelson

 * Tristan de Martel †
 * Aya Al-Rashid †
 * Mohinder †
 * Shen Min †
 * The Strix †
 * Many Unknown vampires †
 * Rowan Obi †
 * Emil Blankenship †
 * Lawrence Howard †
 * Cadence Flynn †
 * Takahashi Fukuda †
 * Arthur Bailey †
 * Claire Burnett †
 * Robert Craig †
 * Isaac Pacheco †
 * Holt †
 * Laurent †

Kol Mikaelson

 * Many Unknown Vampires †

Rebekah Mikaelson

 * Aurora de Martel (Slumbering)
 * Unnamed vampires †
 * Camille O'Connell †
 * Lenore †
 * Many Unknown Vampires

Vampires

 * Lucien Castle †
 * Gregory
 * Anton †
 * Mary Porter †
 * Rose-Marie †
 * Trevor †
 * Katerina Petrova (First time)
 * Pearl †
 * Harper †
 * Annabelle †
 * Logan Fell †
 * Ben McKittrick †
 * Tomb Vampires †
 * Noah †
 * Henry Wattles †
 * Stefan Salvatore † (Formerly)
 * Patient †
 * Unnamed Frat Boy (Sired while possessed by Ambrose)
 * Violet Fell †
 * Damon Salvatore (Formerly)
 * Charlotte
 * Isobel Flemming †
 * Vicki Donovan †
 * Caroline Forbes
 * Jesse †
 * Colin Phelps †
 * Unnamed college girl (Unknown status)
 * Bill Forbes †
 * Abby Bennett Wilson
 * Elena Gilbert (Formerly)
 * Gaspar Cortez †
 * Alistair Duquesne †
 * Marcel Gerard (Formerly)
 * Thierry Vanchure †
 * Max †
 * Tomas †
 * Felicia †
 * Otto †
 * Diego †
 * Joe Dalton †
 * Soldiers of The Brotherhood of the Damned †
 * Marcel's Army †
 * Joshua Rosza †
 * Gia †
 * Jenna Sommers †
 * Derek (Unknown status)
 * Pizza Delivery Girl †
 * People from the Bar †
 * Tina McGreevy †
 * Kieran O'Connell †
 * Many Unknown Vampires

Hybrids

 * Ray Sutton †
 * Paige †
 * Tyler Lockwood † (Formerly)
 * Sloan † (Formerly)
 * Mindy †
 * Tony †
 * Daniel Warren †
 * Nate †
 * Dean †
 * Chris †
 * Kimberley †
 * Adrian †
 * 10 Hybrids †

Vivian Mikaelson

 * Katerina Petrova (Second time)
 * Alexia Branson †
 * Lee


 * Lillian Salvatore †
 * Malachai Parker
 * Lorenzo St. John †
 * Many humans † (Turning into vampires to feed Damon)
 * Farmer John †
 * Ivy † (Formerly)
 * Tripp Cooke † (Formerly)


 * Avani Mikaelson
 * Sarah Nelson


 * Malcolm †


 * Oscar †


 * Mary Louise


 * Nora Mikaelson


 * Beau †


 * Addison Salvatore

Hope Mikaelson

 * Dwayne †
 * Hayley Marshall † (Formerly; bound with the Hybrid Curse)
 * Many Unknown Hybrids with her cousins and sister

Jesus Mikaelson

 * Many Unknown Hybrids with his sister and cousin

Valentina Mikaelson

 * Many Unknown Hybrids with her brother, sister, and cousin

Lillian Mikaelson

 * Henry Benoit †
 * Many Unknown Hybrids with her sisters and brother

Unknown Bloodlines

 * Frederick †
 * Bethanne †
 * Slater †
 * Cody Webber †
 * Nadia Petrova † (Not part of Mikael's, Finn's or Kol's bloodlines)
 * Joey † (Not part of Mikael's, Finn's or Kol's bloodlines)
 * Will † (Not part of Mikael's, Finn's or Kol's bloodlines)


 * Julian † (Not part of Mikael's, Finn's or Kol's bloodlines)
 * Raphael
 * Dirty Robin
 * Seth †
 * Xi Nguyen
 * Ellis †
 * Kyle †
 * Sampson †
 * Krystal †
 * Shawn †
 * Many unknown others
 * Spirit possessing Oscar †
 * Florence †
 * Sofya Voronova (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)
 * Ambrose †
 * Rayna's Unnamed Lover †
 * Lewis † (Not part of Mikael's, Finn's or Kol's bloodlines)
 * Desmond †
 * Wyatt †
 * Bubba †
 * Ashlynn †
 * Meg †
 * Geoff †
 * Lane †
 * Michael †
 * Ann †
 * Cordis †
 * Ben †
 * Lee †
 * Jonathan †
 * Juan †
 * Carlos †
 * Margaret †
 * Many other phoenix stone vampires †
 * Poppy † (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)
 * Greta Sienna † (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)
 * Antoinette Sienna
 * Roman Sienna
 * August Müller † (Unknown bloodline)
 * Emmett † (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)
 * Milton Greasley (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)
 * Kaleb (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)
 * Oliver (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)
 * Sebastian (Not part of Mikael's, Finn's, Elijah's or Kol's bloodlines)

Trivia

 * Mikael was the first Original vampire destroyed. However, it is never mentioned if he sired any vampires, nor is there any mention of the destruction of vampires in a sudden and mysterious way. It is assumed, given he despised vampires even after becoming a vampire hunter and his preference to feed off of vampires, he most likely never sired any vampires.
 * It is shown that an Original's spirit has to die in order to kill off their bloodline; even though Klaus' body was supposedly destroyed, his soul was in Tyler Lockwood's body, so his bloodline was unharmed.
 * However it is possible, that since Klaus' body was not destroyed, that is the reason his bloodline remained intact. This seems to be the case as Esther wished to destroy Rebekah's body after she was jumped into Eva's body.
 * Julie Plec confirmed that Klaus is the origin of the bloodline Stefan, Damon, Caroline and Elena are from.
 * It is possible to unlink a vampire from their bloodline using magic, as Davina attempted in Season Two of The Originals, but her efforts were sabotaged by Kol and Henrik.
 * In Heart Shaped Box, Kol stated that Esther created the sirelines as a further precaution to protect the thing she loved the most, her family.
 * Kol also revealed that the only way to break the sirelines is with the heart of an unsired vampire. The only one in existence is Hayley Marshall-Kenner. However, through the Unification Ritual, the ability was transmitted to Jackson Kenner.
 * In A Streetcar Named Desire, Klaus' sireline was broken due to Davina removing the link between Klaus and his sireline.
 * It is unknown if future vampires would be sired to him, as the spell unlinked existing vampires, nor has he sired any new vampires since it was broken.
 * According to Lucien, vampires from all over the world heard that an attack was made on Klaus' life by Dahlia. Lucien also stated that each of the sirelines is at war and an attack may be made on either of their lives.
 * Kol and Vivian are the only originals who's first sired vampires are still unknown.