Relationship Chart

Culled from multiple lengthy conversations at the Three Broomsticks in Hogsmade

Gryffindor

Amalia Oceanborough (Y4)

H: Bit hard to get around the accent. Only speak RP, me. But she's a good one.
A: She's always running around.
V: Getting underfoot. Ah, to be young and starry-eyed again…
G: We've talked about this, Ronnie. You're fifteen.

Merlin English (Y4)

H: Utterly incomprehensible. I'm just happy I'm not in his year. So I don't have to pair up with him.
V: Oh, Gaunt is friendly with him.
G: One Slytherin and two Gryffindors. Heartwarming.

Frank Lee (Y?)

G: D'you reckon he and Travers look similar?
A: Dunno what you're talking about, Travers's got seventy years on him.
H: And he's not very good at Defense. Isn't that sort of thing supposed to be heritable?

Cordelia Black (Y5)

H: Keeps to herself, I guess?

Yukiri Sukasuka (Y?)

Onaga Sukasuka (Y?)

Henry Travers (Head of Gryffindor, D.A.D.A)

V: Oh, Professor Travers is wonderful. When I received my Hogwarts letter, Grandfather invited him over for a chat. He was most obliging.
H: I know curfew is supposed to be a thing, but he could stand to be a bit less draconian.
A: Great teacher. Just great.

Studios Gaunt (Herbology)

V: Aren't the Gaunts usually from Slytherin?
H: Beats me.
G: I like him. He's very sad, though.
V: Never misses a feast, does he?
A: HE SPEAKS RUSSIAN. I must defend him with my life.

Hufflepuff

Oliver Ollivander (Y>2)

A: He can read minds, can't he?
G: Yes. We trade casette tapes.
H: Will he pay if I'm selling?
G: Er, you can try.

Ciaran Whitehorn (Y5)

A: FUCK this guy.
H: You're just mad he's a better flier than you.
G: Can we all calm down, please?

Oaklynn Barlowe (Y4)

A: She's on the Hufflepuff Quidditch team? Then it's on sight.
G: She's all right. Pretty transparently into Ollivander. I reckon the entire school knows. No one's bothered to inform Ollivander, though. We work together in Divination sometimes.

Carl Heron (Y?)

G: He understands metalworking. It's refreshing.
H: Gee, how come Hufflepuff gets all the hotties?
A: English is right there.
V: Please, no.

Arthur Abbott (Y4)

G: He's nice. We traded travel tips. You know the mokele-mbembe actually exists?
H: Sure, why the heck not. Is that in South Africa or something?
G: Congo basin.
A: Once your family passes a certain net worth, the lines between magic and not begin to blur.
V: Mmm. Quite.

Mythran Stonework (Y?)

Jian (Y?)

Minrathous Cicero (Head of Hufflepuff, Charms)

V: Ah, Italy. Sun, sand, and simply delightful boys.
G: He's a good person. But I don't think we agree very much on the subject of censorship. Information wants to be free.

Ravenclaw

Olympia Stalward (Y4)

A: She's made of paper. What else needs to be said?

Alric Yaxley (Y4)

A: He's kind of impossibly perfect.
V: Mmm. Eligible.

Minagi Sukasuka (Y4)

G: We explore Hogwarts together sometimes.
A: Who? Oh, her.
V: I think she rather enlivens the ethnic tapestry of the school.

Tina Crouch (Y4)

A: BEST Beater I've ever had the distinct pleasure of playing alongside. THE BEST.
H: Good with Potions. Besides that, meh?

Thomas P. Hippos (Y4)

A: The new guy. He's from Ontario, apparently.
V: Oh, another colonial.
G: I run into him sometimes while wandering around Hogwarts.

Alexandre Baptiste Jr. (Y?)

Simon Stan (Divination)

G: I like him. And he's right, you know. The future is all around us. You just need to know where to look.
H: What I'd like to know is why he hasn't gone and bet some money on stocks or something. Put a thousand pounds on Microsoft and watch it grow.
V: There are laws against that sort of thing.
A: Not in Russia.
V: Yes, yes, Alya, we all know Russia is the future.

Dougal McCreedy (Potions, Arithmancy)

H: He's funny.
V: Great teacher. Very informative. Arithmancy is such a fascinating subject, isn't it?
H: Uh. I don't know about that.
A: He's fine.

Chantelle Shafiq (Head of Ravenclaw, Transfiguration)

H: I don't know, I like her.
A: Yeah, she's a good Head as far as Heads go. Better than Firethorn.
V: Quite.

Slytherin

Tony Ricketts (Y5)

H: Bit weird, isn't he?
V: Oh, you know, not really. Just Scottish.

Zachary Oceanborough (Y2)

A: Oh, doesn't he…
V: Yes. I'm not encouraging him, I'll tell you that.
G: But you're considering it.
H: Quiet kid. Are we sure he and Amalia are related?

Lennox Gaunt (Y4)

V: He refers to me as a "she" instead of as an "it" in the Common Room, so I've concluded that he's one of the good ones.
H: Him, English and Oceanborough are holy terrors. Christ.

Tibbits, Free House Elf (Y?)

V: Yeah. He keeps to himself.
G: I get the feeling he doesn't like us very much.
H: Gee, ya think?

Phoebus Black (Y7)

V: Bastard.

Deimos Black (Y6)

V: Bastard.

Nicholas Firethorn (Head of Slytherin, Care of Magical Creatures)

V: I wish he'd do something about the damned purebloods.
A: He's a good teacher.
V: Yes, but not a good Head!
G: Let's all just… calm down a bit.

Other

Headmaster
Dan K. Manastone

H: Our fearless headmaster.
V: Yes.
A: Yeah.
G: Yeah.

Spencer (fmr. Windsor)
Diana