1868 | Theodore is born to Nathaniel and Victoria Gallivan, and named after his late grandfather, who passed away just before his birth.

1870 | He becomes an older brother, when his mother gives birth to a girl, Cecily.

1876 | His first childhood memory that isn't a hazy recollection of a happy life is of a night this year, when his parents have gone out to dinner and don't return. Theo has never been more terrified. Their father returns home from hospital. But their mother has been killed. (In a werewolf attack, it later transpires.)

Change abounds in the following months, sees Theodore slightly shell-shocked. They move out to the country, and at last find out about their magical heritage, something their father has kept from them until now. It's a lot to take in, and suddenly Theodore can explain odd instances in his own life when he is feeling particularly frustrated as signs of magic. (At this point he still can't explain why, if his father was a wizard, his mother could have died.)

1877 | They move to Hogsmeade, which means more change – but also more time to get accustomed to this new world. Theo – perhaps unsurprisingly, given his father's passions – finds that quidditch is one of the best things about this new life.

1879 | As is Hogwarts, when at last it is time to attend. Theodore – a clever, capable, cheerful boy again, for the most part – is sorted into Ravenclaw.

1880 | In his second year, he becomes a Chaser for his house team. His father gives him a top-of-the-line broom, although Theodore is generally rather bitter at this point, since Nathaniel has started courting again, and Theo has no interest in having another mother or in being brought around by bribery.

1881 | Theo remains fairly stubborn and sulky about this, even as his father marries Veronica Scamander; he is still very strongly attached to the memory of his late mother, and feels like moving on is a betrayal. He is also a fairly protective older brother, genuinely quite close to Cecily, and is pleased to have her join him in Ravenclaw. This year he also picks up Muggle Studies, Ghoul Studies, and Ancient Studies. (He likes his studies.)

1882 | A half-brother is born, taking his father's name. Theodore is still begrudging about this, though he is slowly – slowly – growing more civil to Veronica.

1883 | A half-sister joins the family, and when he begins fifth year he is made a prefect. But this is also the year he finds out the truth about his father, a revelation that makes most else pale beside it. They're out at an international market around the time of the Quidditch World Cup; it is sunset; Theo is dawdling; his father transforms, and Theo has to leave him in the forest, barely gets out alive. But his father is a werewolf. Theo's stunned, but keeps the secret. What can he do? He's his father.

1884 | At the quidditch finals of fifth year, in May, Theodore gets impaled by his own broomstick and is out cold in the hospital wing for a week. He continues to play quidditch – he feels obliged when he gets made House Captain in sixth year, and he does still love it – but the incident throws him off the dream of playing professionally (for the Cannons, as he knows his father would love for him to do), a little.

1885 | But Cee joins the quidditch team as a Chaser alongside him, which is great! Cee also finds out that their father is a werewolf, and, quite evidently, she thinks this is less great.

1886 | Theodore, having been appointed Head Boy, graduates from Hogwarts in May. It is at this point, perhaps for the first time in his life, he feels utterly lost about his future. Quidditch is too much of a hobby and not a lasting career, and perhaps too light-hearted for him... In the end, he starts up in the Auror Training programme, because it seems like a challenging path to take, and he has usually found himself capable.

1887 | He continues on to the second year of training, still not sure if this is the right path, but he's committed to it now.

1888 | Only his father disappears on a scouting trip to Asia. Where presumed dead by the newspapers, the family learns the truth, because Nathaniel has left an explanation behind. It is better for them all if he appears dead and gone. Better that he, a werewolf endangering them all, leaves them safe. Nevertheless, having been abandoned by his remaining parent, Theo is Not Happy.

1889 | He might be taking it worst of all, in the family. Before he can finish his final exams and sign off on the last three years of hard work, Theo lets his life disintegrate around him to the point of meltdown, and the Auror department are witness to it. In the end, between the nosedive his training was taking and the "grief" for his father, Theo drops out of the program before they can fail him. He knows then that there's no going back, and all that was a waste.

1890 | There are still the Cannons to think about, of course. There's still a quidditch sponsorship he never wanted to fall back on. Cecily lends extensive help behind the scenes, but Theo's sure at some point he'll mess it up somehow.

1891 | Still, he didn't see this coming: in February, after he agrees to give Cassius Lestrange the captaincy, Lestrange kisses him, and Theo is forced to confront the possibility that maybe he isn't as straight as he thought.

Presently | Nope, definitely not as straight as he thought.