Another headcanon :)

Teddy and Victoire had 3 daughters. Their names were Dora, Jasmine and Madison. Teddy was the best father ever. When the girls were young, he got them all mini broomsticks (like Sirius & Harry) and taught them to play Quidditch, with some assistance from Harry, Ginny and James. 

They went to Hogwarts and were sorted into Gryffindor (Dora), Hufflepuff (Jasmine) and Slytherin (Madison). Madison joined the Slytherin Quidditch team, and the only games they ever lost were when she wasn't playing. 

Jasmine met Alexa Finnigan-Thomas, the adopted daughter of Kayla Finnigan-Thomas, Dean & Seamus's daughter (biologically Dean's). Later the two realized their true feelings and started dating, eventually getting married.

Dora became an auror and invented a whole load of spells.

Lol sorry this was long and weird but that's what I imagine.