The Babyshambles singer is believed to have fathered a love child named Aisling with Lindi Hingston, who previously denied that they had ever slept together and in 2007 successfully sued the News of the World for reporting otherwise.
Hingston made the claim while speaking to the South African Sunday Times, adding that she had informed Doherty of her pregnancy while he was in prison for cocaine charges this summer.
She told the publication that the 32-year-old was "over the moon" at the news, but is yet to see Aisling as he is still on bail and not allowed to travel.
However, Hingston has refused to elaborate on the length and nature of their relationship.
Doherty also has an 8-year-old son named Astile with ex-partner Lisa Moorish.