Young Teddy Lupin, in shaky letters that veered up and down the page because he had only just learned to write, kept a notebook full of all the stories Harry and Ginny told him about his Mum and Dad.
As he grew older, he tracked down people who had known them- professors, old school friends, work colleagues- and wrote down their stories as well, until he was 17 and had to reinforce a shelf which held all of the books he’d filled up over the years. These books were the tales of Remus and Tonks as they grew up, of Remus and the marauders, of Tonks and her own adventures at Hogwarts (including that brief tryst with Charley Weasley that Charlie had refused to talk about until Teddy was 15), of Remus’s life after Hogwarts, of Tonks’s success as an auror, and the final book, the smallest but the most precious of all, was the story of their coming together as the world was falling apart.
And taped onto the very last page was a photograph of a turquoise haired baby, with chubby cheeks and a big grin, being held by a worn down but still smiling man, having his cheek kissed by a young, laughing woman.
The only photo of Teddy Lupin and his Mummy and Daddy.