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Who is Sirius son?

Sirius Black is a character in the Harry Potter book and movie series. He is Harry Potter’s godfather and a member of the Order of the Phoenix. Sirius does not have any biological children in the books or movies.

Sirius’s Family Background

Sirius Black came from the noble and most ancient House of Black, one of the largest, oldest, and wealthiest pure-blood wizarding families in Britain. He was the oldest son of Orion and Walburga Black and the brother of Regulus Black.

The House of Black was famous for its belief in blood purity and prejudice against Muggle-borns and half-bloods. However, Sirius rejected these beliefs from a young age and was considered a “black sheep” by his family. He was sorted into Gryffindor house at Hogwarts, which caused further tensions with his Slytherin family members.

At the age of 16, Sirius ran away from home and went to live with James Potter and his family. He considered James to be his true brother and family. Sirius was named Harry Potter’s godfather when Harry was born.

Sirius in the Harry Potter Series

In the Harry Potter series, Sirius was falsely accused of betraying James and Lily Potter to Voldemort and murdering their friend Peter Pettigrew. He was sent to Azkaban prison without a trial and remained there for 12 years.

He escaped from Azkaban in Harry Potter and the Prisoner of Azkaban to protect Harry from Pettigrew, who had been disguised as Ron Weasley’s rat Scabbers. Sirius helped Harry uncover the truth about what happened to his parents and cleared his own name.

After this, Sirius remained in hiding but maintained contact with Harry and provided guidance and support. He saw Harry as a surrogate son and wanted to take custody of him. However, he was killed by his cousin Bellatrix Lestrange in Harry Potter and the Order of the Phoenix during the battle at the Department of Mysteries.

Sirius Never Had Biological Children

Throughout the books and movies, there is no mention of Sirius ever having any biological children of his own. Some key facts:

  • Sirius was sent to Azkaban at age 21 and remained there until age 33. This ruled out much of his prime years for starting a family.
  • After his escape from Azkaban, he remained a fugitive in hiding and on the run. This made it very difficult for him to settle down and have a family.
  • There are no references to Sirius being romantically involved with anyone or having any love interests throughout the books.
  • No children or other family members besides his brother Regulus are ever mentioned.
  • Sirius considers Harry to be his surrogate son and treats him as such.

Based on all available information from J.K. Rowling’s books and supplemental materials, Sirius Black did not have any biological children before his death in Book 5.

Sirius’s Relationship with Harry as a Surrogate Son

Although he did not have biological children, Sirius formed a close paternal bond with Harry Potter after his escape from Azkaban. Some key points about their relationship:

  • Sirius was named Harry’s godfather when Harry was born and was supposed to take custody of him if anything happened to Lily and James.
  • After reconnecting in Harry’s third year, Sirius became a father figure to Harry and provided guidance, advice, and support.
  • Sirius offered for Harry to come live with him after his name was cleared. He wanted to become Harry’s legal guardian.
  • Harry looked to Sirius for wisdom about his parents and encouragement in difficult times throughout books 4 and 5.
  • Sirius treated Harry with love and affection through gifts, letters, and defending him from harm.
  • Both Sirius and Harry regarded each other as family.

J.K. Rowling stated that if Sirius had lived, he likely would have become a true surrogate father to Harry. Harry was devastated by Sirius’s death and lost his closest thing to a parent. Sirius’s love and support for Harry demonstrate he considered him a son in all but blood.

Fan Theories on Sirius Having a Child

Although Sirius definitively does not have any children in the canonical Harry Potter story, some fans have imagined alternative storylines where Sirius fathers a child before his death. Some popular fan theories include:

  • Sirius had a secret lover before being sent to Azkaban who gave birth to his child that he never knew about.
  • Sirius fathered a child with another member of the Order of the Phoenix between books 4 and 5.
  • Sirius used magic to conceive an heir with a woman to carry on the Black family line before his death.
  • Sirius had a child who was raised in secret to protect them from the Ministry of Magic.
  • Sirius had a daughter who would later attend Hogwarts and befriend Harry’s son James Sirius Potter.

While intriguing possibilities, none of these scenarios are considered canon to the books or movies. They simply demonstrate fans’ interest in Sirius’s character and desire to see him experience fatherhood. However, within the established story, Sirius unfortunately never got the chance to have children of his own.


In summary, Sirius Black did not have any biological children in the Harry Potter series. He was incarcerated in Azkaban during his prime years for starting a family. After his escape, he was a fugitive on the run and devoted to protecting Harry. Sirius formed a close surrogate father-son bond with Harry and loved him as his own. While fan theories imagine alternative stories, in J.K. Rowling’s canon, Sirius tragically died childless. His sole heir and closest thing to a son was his godson Harry Potter, whom he loved dearly until the very end.