Unknown Full Birthdates:

Alberforth Dumbledore

Albus Severus Potter

Arabella Figg

Argus Filch

Ariana Dumbledore

Colin Creevey

Gregory Goyle

Gellert Grindelwald

Hedwig

Helena Ravenclaw

Lucius Malfoy

Marcus Flint

Narcissa Malfoy

Newt Scamander

Oliver Wood

Poppy Pomfrey

Professor Rolanda Hooch

Rose Granger-Weasley

Scorpius Malfoy

Vincent Crabbe