Harry Potter: 20 Scandalous Facts About The Families From the Potterverse

Seamus Finnigan’s mother didn’t tell his Muggle father that she was a witch until after they married. To quote Seamus, “It came as a nasty shock to him when he found out.”

“Blood purity” wasn’t the only gene that Voldemort’s maternal family wanted to keep in the family. As descendants of Salazar Slytherin, they are fluent in Parseltongue—if it meant marrying a cousin or two to keep the ability in the family.

A Squib is someone who was born into a wizarding family but hasn’t got any magic powers. They are kind of the opposite of Muggle-born wizards, but Squibs are quite unusual.

Draco Malfoy and Nymphadora Tonks are first-cousins by their mothers being sisters. However, they’re not close—Tonks’ mother, Andromeda Black, was cast out of her family after she married a Muggle-born wizard named Ted Tonks.

Cedric Diggory, the doomed Triwizard Tournament contestant, comes from an overachieving family. One of his ancestors, Eldritch Diggory, served as the Minister for Magic in 1733 and founded the Auror program. Unfortunately, he died tragically early in 1747 from Dragon Pox.

Luna Lovegood grows up to marry the grandson of Newt Scamander, Rolf Scamander.

The first Lucius Malfoy plotted to marry Queen Elizabeth I of England. The Golden Age ruler rejected Malfoy’s offer. It’s rumored that he jinxed her with frigidity in response, explaining, why Elizabeth turned down every offer of marriage before dying single at the ripe age of 69.

Gilderoy Lockhart is a half-blood, born to a witch mother and Muggle father. He is also the only one of their three children to inherit magical power, as his two older sisters were both born Squibs.

Orford Umbridge was the father of Dolores Umbridge and a squib son. He was an unambitious wizard who worked at the Ministry of Magic as a floor mopper. Orford later became a source of embarrassment for his daughter and would later disappear from sight at his daughter's request in exchange for a small financial allowance.

Draco Malfoy’s paternal grandfather, Abraxas Malfoy, is largely credited with a plot that ended with the first ever Muggle-born Minister of Magic leaving office.