No professor McGonagall is not Filch's mom. She was married to Elphinstone Urquhart who died later on and they didn't have any children. She did not have a child as mentioned by Harry when he yells out in Cursed child that McGonagall would not understand why he was worried about Albus because she never had a child.
There is no concrete reason to believe that Filch was McGonagall's son, but it is still strange that he got a job at Hogwarts. The Harry Potter series revealed how most Squibs, non-magical people born to magical families, tend to assimilate with the Muggle world.
The retired Elphinstone bought a small cottage for the two of them in Hogsmeade, whence Minerva could travel easily to work every day. Although the couple had no children, her nieces and nephews visited often. This was a period of great fulfilment for Minerva.
He was born to at least one wizard parent sometime before 1951, presumably somewhere in the British Isles. Despite his magical parentage, Filch was a Squib, meaning he could not perform magic.
He married Isobel Ross, a Hogwarts-educated witch and had several children: Minerva, their oldest child and only daughter, and two younger sons, Malcolm and Robert Jnr.
Marriage. Through all her early years at Hogwarts, Minerva McGonagall remained on terms of friendship with her old boss at the Ministry, Elphinstone Urquart. He came to visit her while on holiday to Scotland, and to her great surprise and embarrassment, proposed marriage in Madam Puddifoot's teashop.
Norris is the pet cat of Argus Filch, the caretaker of Hogwarts School of Witchcraft and Wizardry. Mrs. Norris is described as having an unusually strong connection with her master, alerting him to any students misbehaving inside the school grounds.
And Filch talks to her like she's a human and calls her "my sweet." It's clear she's a maledictus, married Filch when she was still able to take human form, and then she succumbed to the blood curse and became permanently a cat, but Filch still loves her as his wife. It is the only.
Later in the year, McGonagall duelled with Death Eater Alecto Carrow during the Battle in the Astronomy Tower and later learned of Snape's murder of Dumbledore. McGonagall was initially appointed as Headmistress, but was demoted after Voldemort took control of the school and placed Snape as Headmaster.
Professor Marazion succeeded Minerva McGonagall in the post of Head of Hogwarts School of Witchcraft and Wizardry. This individual became Headmaster or Headmistress some time between 2008 and 2017 after Minerva McGonagall went into retirement as she was "getting on a bit".
However, Filch seems to have always had a desire to be part of the wizarding world, and perhaps never wanted to integrate into Muggle society. So someone, most likely Professor Dumbledore, felt sorry for him and offered him the job as Hogwarts caretaker so that he could still be part of the wizarding world.
As Dolores Umbridge was a sadist who enjoyed torturing students, Filch could relate to this. Also, as Umbridge granted Filch permission to torture misbehaving students, whereas Dumbledore would never even think of such things, he had loyalty to her. He is the only person who liked her at the school.
However, like in the real world, some magical members of certain families or groups have biases toward those who do not conform to a "pure-blood" status, such as being Muggle-born, a Squib or, in the case of Rubeus Hagrid, a half-breed. This prejudice may have affected the Hagrid family in a myriad of ways, but Mr.
Mrs Norris seems exceptionally smart for a cat, to the point that many have suspected she is a cat/Kneazle cross like Crookshanks or an Animagus. However, J. K. Rowling has stated on her website that she is just a highly unpleasant cat.
Mrs. Norris' looming presence in the Harry Potter series is far too magical for her to be an ordinary cat, and there's enough evidence to support a theory that she's a Maledictus like Nagini. Filch's nosy cat appears all throughout the book series and occasionally in the films.
Hermione Granger's cat in Harry Potter is named Crookshanks. Crookshanks is a distinctive-looking half-Kneazle, half-cat hybrid with a squashed face and a talent for detecting untrustworthy individuals.
Mrs. Norris, the cat of Hogwarts caretaker, Argus Filch, is a long-haired striped cat with red eyes and first appears in the first movie, “Harry Potter and The Sorcerer's Stone.” She is portrayed by a Maine Coon cat in the movies. You will most likely see Mrs. Norris following Filch around the castle.
Dumbledore never married, but had romantic feelings towards his childhood-friend-turned-enemy - Gellert Grindelwald. The two were inseparable for a bit of time, but sadly Grindelwald turned to the dark side, and Dumbledore had no choice but to take the one he loved down. He never pursued another after that.
She continued to pine for her first love, but was pursued by her former boss, Elphinstone Urquart, who proposed many times. Finally, after learning of her first lover's death, McGonagall accepted Elphinstone's proposal. However, their marriage only lasted three years; he was killed by a Venomous Tentacula bite.
While McGonagall initially accepted the marriage proposition, she later recalled her parents' life in secrecy and her mother locking her wand away, not to mention the possibility of losing her job if she ever broke the International Statute of Secrecy.
