Arthur Weasley in Gryffindor?

[KathyK]

No: HPFGUIDX 111418

Deb wrote:

<snip> 
> >She definitely says, "I was" not "We were" told off . . . 
> > so . . . 
> >she obviously came back on her own. Is that because Arthur was 
> >detained by Filch's predecessor, or because he was trying to 
> >sneak  into the Ravenclaw or Hufflepuff dorm at the time?
 
 
Potioncat said:

> I also recall something about the two of them getting into 
> trouble, but Molly got away while Arthur was caught and "still has 
the scars to prove it."
 
> My understanding perhaps from the first conversation between Ron 
> and Harry, that both parents were in Gryffindor.

KathyK, with book in hand:

Potioncat is correct on both counts.  The incident where the Fat 
Lady told off Molly and the incident where Arthur was caught are the 
same.  

************
GoF Ch. 31, US ed. pg 616:

"She was here in my time, said Mrs. Weasley.  "She gave me such a 
telling off one night when I got back to the dormitory at four in 
the morning-"

"What were you doing out of your dormitory at four in the morning?" 
said Bill, surveying his mother with amazement.

Mrs. Weaslely grinned, her eyes twinkling.

"Your father and I had been for a nighttime stroll," she said.  "He 
got caught by Apollyn Pringle-he was the caretaker in those days-
your father's still got the marks."
***********

And Ron does state his parents were both in Gryffindor:

**********
PS/SS Ch. 6, US ed. pg 106

"What house are your brothers in?" asked Harry.

"Gryffindor," said Ron.  Gloom seemed to be settling on him 
again.  "Mom and Dad were in it, too."
***********

KathyK, good for looking up quotes but not much else these days ;-)