Wizengamot

I did some research on how the Wizengamot works. What I found is that in the wizarding world, criminal trials take place before a body known as the Wizengamot, which is a collection of nominated witches and wizards who, like a jury, vote on the guilt or innocence of the party being interrogated. There do not appear to be any legal counsels, only 'interrogators' and 'witnesses'. Therefore, I will create my own version of the Wizengamot.

The working of noble families will remain the same. There are sacred 28 most ancient noble families, namely:

Abbott

A grave belonging to an unknown Abbott was found by Harry in Godric's Hollow. Hannah Abbott was the first of her year to be Sorted and Hannah herself fought bravely during the Battle of Hogwarts.

Avery

Mentioned by surname only in the Harry Potter books. An Avery had just stepped out of the room at the Slug Club party where Tom Riddle asked Professor Slughorn about Horcruxes. A Death Eater named Avery was also part of the ambush at the Department of Mysteries. He was believed to have 'wormed his way out of trouble' following Voldemort's first defeat, by claiming to have been acting under the Imperius Curse.

Black

Sirius, Harry's godfather, was the first of the Black family not to gain admittance to Slytherin. He later gave his family's London house) over as headquarters for the Order of the Phoenix, much to the chagrin of the spirits of his ancestors who haunted it. His brother was Regulus Black, a Death Eater who switched sides and tried to destroy a Horcrux, and among Sirius's many cousins were Bellatrix Lestrange and Narcissa Malfoy.

Bulstrode

A particularly unpleasant Slytherin and early consort of Draco Malfoy, Millicent Bulstrode had a number of skirmishes with Hermione. The latter had a mishap with some Polyjuice Potion and one of Millicent's cat's hairs.

Burke

Caractacus Burke, one of the founders of sinister wizarding shop Borgin and Burkes, was seen by Harry in the Pensieve, buying Salazar Slytherin's locket from Voldemort's mother when she was left destitute and pregnant.

Carrow

Amycus and Alecto Carrow were a brother-and-sister Death Eater double-act, recruited to instil some discipline at Hogwarts.

Crouch

Bartemius Crouch might have led a very ordered life were it not for his Azkaban-escapee and Death Eater son 'Barty' Jnr, who killed him and transfigured his body into a bone. Barty used Polyjuice Potion to impersonate Mad-Eye Moody to lead Harry into the Triwizard Tournament trap.

Fawley

No members of this pure-blood family are mentioned in the Harry Potter stories.

Flint

Slytherin Quidditch captain Marcus was a member of the Flint family who lived up to his sharp, spiky name.

Gaunt

Quite where Voldemort got his meanness from is indicated from the portrait Rowling painted of his grandfather, Marvolo Gaunt, and his uncle Morfin. Obsessed with their own pure-blood status and with being the only living descendants of Salazar Slytherin, they terrorised Voldemort's mother Merope and accused her of being a Squib. After a string of attacks on Muggles, the two Gaunt men ended up in Azkaban, leaving Merope alone to enchant local Muggle boy Tom Riddle – and we all know that didn't end well.

Greengrass

Daphne Greengrass was a student alongside Harry, Ron and Hermione who only made one appearance in the books. Draco Malfoy went on to marry Astoria Greengrass, a woman more tolerant of Muggles than the Malfoy family would have liked.

Lestrange

Bellatrix and her husband Rodolphus were among Voldemort's most loyal followers. Bellatrix was killed in a duel by Molly Weasley, and Rodolphus was injured during the Battle of Hogwarts.

Longbottom

Neville Longbottom was one of Harry, Ron and Hermione's best friends and a fellow Gryffindor. He was raised by his grandmother Augusta because his Auror parents had been so badly tortured by the Lestranges that they were confined to St Mungo's Hospital for Magical Maladies and Injuries. Longbottom killed Voldemort's snake Nagini during the Battle of Hogwarts, playing a major role in the downfall of the Dark Lord. He later became Hogwarts Herbology professor.

Macmillan

Hufflepuff and supporter of Cedric Diggory in the Triwizard Tournament, Ernie Macmillan fell out with Harry a number of times but they remained good friends.

Malfoy

The fate of this long-standing dynasty might have ended had Draco Malfoy and his parents, Lucius and Narcissa, not decided to switch sides during the Battle of Hogwarts. The pure-blood Malfoy went on to marry Astoria Greengrass and had a son, Scorpius.

Nott

'Weedy-looking' Theodore Nott was a contemporary of Harry's at Hogwarts whose father was one of the Death Eaters summoned upon the Dark Lord's return in Harry Potter and the Goblet of Fire. The elder Nott was one of the very early Death Eaters. Cantankerus Nott is widely believed to have authored the 'Sacred Twenty-Eight'.

Ollivander

Makers of fine wands since 382 BC, the Ollivanders could make quite a claim to being among the oldest wizarding families.

Parkinson

An early girlfriend of Draco Malfoy, Pansy Parkinson was described as a 'hard-faced' Slytherin girl.

Prewett

Harry learned that brothers Gideon and Fabian Prewett (whose sister was Molly Weasley) 'fought like heroes' but were famously killed by Death Eaters in the First Wizarding War. Antonin Dolohov was convicted of their murder but it is said it took five Death Eaters to kill them.

Rosier

Evan Rosier was a Death Eater killed the year before Voldemort's first downfall.

Rowle

Another Death Eater, Thorfinn Rowle was described as big and blond and got into trouble with Voldemort when Harry, Ron and Hermione escaped his clutches in central London in Harry Potter and the Deathly Hallows.

Selwyn

Dolores Umbridge claimed at one point to be related to the Selywn family, although whether this is true or not is unclear. A Death Eater named Selwyn was involved in the kidnap of Luna Lovegood, but his appearance in the Potter stories was brief.

Shacklebolt

Kingsley Shacklebolt was one of the wizarding world's finest Aurors. Assigned to protect the Muggle Prime Minister during the Second Wizarding War, he was later named temporary Minister for Magic.

Shafiq

No appearances were made by the Shafiq family in the Potter stories.

Slughorn

Potions master and former Head of Slytherin house, Horace Slughorn had a reputation for collecting bright students and inviting them to parties known as the 'Slug Club'.

Travers

One of the Death Eaters to escape from Azkaban, Travers was famous for helping murder the McKinnons.

Weasley

Bill, Charlie, Percy, Fred, George, Ron and Ginny were members of a strong dynasty which, despite suffering heavy casualties during the fight against He Who Must Not Be Named, is certain to continue for countless generations. Molly and Arthur had many grandchildren, including Ron and Hermione's children, Rose and Hugo, and Harry and Ginny's three – James, Albus and Lily.

Yaxley

The only Yaxley in the Potter books was another dastardly Death Eater.

Why didn't the Potters make the Sacred Twenty-Eight?

Potter is a common Muggle surname. Harry's family didn't make the list, according to J.K. Rowling, because 'the anonymous compiler of that supposedly definitive list of pure-bloods suspected that they had sprung from what he considered to be tainted blood'.

Source:https://www.wizardingworld.com/features/who-are-the-sacred-twenty-eight

So there were families like the Potters which were just that - families. They were neither noble nor ancient. They were made a noble house after the demise of Voldemort by Harry Potter in 1981.

There are fifty seats in the Wizengamot. The noble families will have reserved seats here, which are twenty-eight; the rest will be nominated by the Ministry and can be changed by the Ministry. These people will decide which bills will pass and how criminals will be judged.

The goblin bank will only deal with money; there will be no lordship tests administered by the goblins. They also will not deal with inheritances. If all the people of a lordship have died and no one has claimed it for a hundred years, the inheritance will be absorbed by the ministry. The lordship test will be administered by the ministry.

Oh looks of main character if anyone is curious.

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