Use GIRLS or BOYS names for middle names for multiples. For the quads' first names use two sets of twins names.
LN: Krum, Patil, Parkinson, Potter, Skeeter, Stimpson,
DH:
DW:
DD:
DS:
DS/DD:
DS:
DD:
DD/DD:
DS/DS:
DD/DS/DS/DS:
GIRL:
Angelina,
Augusta, Bathilda,
Bellatrix, Celectina,
Cho,
Dolores,
Doris, Elfida, Elladora,
Gladys,
Helga,
Hermione,
Hestia,
Lavender,
Luna,
Mafalda,
Millicent,
Miranda,
Morag, Nymphadora,
Pansy,
Petunia,
Rowena,
BOY:
Argus,
Arnold,
Avery, Bane, Bartemius,
Bertie, Bole,
Cormac, Dedalus,
Dilys,
Draco,
Dudley, Elphias,
Harry,
Igor, Mundungus,
Neville, Phineus,
Piers,
Remus,
Ronan, Rubeus,
Seamus,
Stewart, Stubby,
Viktor,
Zacharias,
GIRL/GIRL:
Padma and
Parvati,
Fleur and
Gabrielle,
Susan and
Amelia,
BOY/BOY: Albus and Aberforth,
Cedric and
Amos, Regulus and
Sirius,
Ludo and
Otto,
Colin and
Dennis,
Gideon and
Fabian,
Bill and
Ron,
Fred and
George,
Percy and
Ron, Rodolphus and Rabastan,
GIRL/BOY:
Marge and
Vernon,
Enid and Algie,
Alice and
Frank,
Lily and
James,
Petunia and
Vernon,
Bellatrix and Rodolphus,
Narcissa and
Lucius,
Arthur and
Molly,
Charlie and
Ginny,