[Corin Stormhands]

But, didn’t Teddy’s grandmother live? (Tonks’ Mom). Maybe Teddy still lived with her.

[Tijeras_Slim]

That’s what I thought. I know Ted Tonks was killed, but I don’t think his wife did.

[CholeraJoe]

Andromeda Tonks, Teddy’s grandmother survived.

[SuziQ]

(Tonks’ Mom). Maybe Teddy still lived with her.

I'm thinking that was the case. In Harry's case, there was no one else to take him, since Sirius was in Azkaban, so Dumbledore took him to his only living relative, Petunia.