where ... came from
Nadie sabe de quién era el cadáver, o de dónde vino.
Nobody knows whose body it was, or where it came from.
Quiero saber de dónde vino el niño.
I want to know where the child came from.
I don't know where it came from.
La princesa olvidó quién era y de dónde vino.
The princess forgot who she was and where she came from.
— El laberinto del fauno (2006)
Tom no sabía de dónde vino Mary.
Tom didn't know where Mary came from.