Leela and Andred's first child

According to some accounts, the child of Leela and Andred was also the first child naturally conceived and born on Gallifrey for millennia, (PROSE: Lungbarrow, Gallifrey: A Rough Guide, Jealous, Possessive) since the Pythia's Curse which had originally forced the Great Houses to develop the looms. (PROSE: Lungbarrow, Gallifrey: A Rough Guide)

Biography
Upon the child's conception, K9 Mark I delivered the news of Leela's pregnancy to K9 Mark II, whom was still trapped in E-Space with Mistress Romana. According to Mark I, Andred wasn't happy with the news and had been "going around disconsolately, muttering, and shaking his head".

Upon hearing this news, Mark II told Romana of the pregnancy, and she remarked that "such an advent would be very big news on her homeworld". She also admitted to Mark II that she felt that the whole thing was a "bit common", with "an asylum-seeking off-worlder moving in, marrying one of the guards and proceeding to GIVE BIRTH ALL OVER THE PLACE". (PROSE: Jealous, Possessive)

When the Seventh Doctor learned that Leela was expecting, he looked into her eyes for a long moment, as if recognising something there. Noting that the son of a Time Lord father and human mother would have an "unusual pedigree", he asked her to name the child after him. Leela looked startled, then nodded. (PROSE: Lungbarrow)

The event of the child's birth was included in a tour run by a time travelling tour operator, thoughout the history of Gallifrey after its destruction. (PROSE: Gallifrey: A Rough Guide)

Behind the scenes

 * Marc Platt intended the ending of Lungbarrow to imply that Leela and Andred's child would eventually travel back to the Dark Times and become the Other, who ultimately dissolves himself in the Loom network to be rewoven as the First Doctor, explaining how he can be "half-human on [his] mother's side" but also Loom-born.
 * The Faction Paradox character Intrepid may have been intended to be an older version of Leela and Andred's child. Intrepid is said to be half-human, half-Homeworlder, but their parentage and birth name are never given.