It's hard to say without reading it, but it could be Harry Potter himself as the story is related to his family. Maybe there's a new villain who is trying to steal the family magic.
I'm not entirely sure as there could be many different takes in a fanfic with that title. It might involve a story where someone tries to steal the family magic of the Potter family. Maybe a dark wizard has a plan to take the unique magic associated with the Potters for their own evil purposes.
Obviously, Harry Potter himself could be one of the main characters. He has a lot of untapped potential in terms of family magic that could be explored. For example, delving deeper into the magic he inherited from his parents.
I'm not entirely sure as it's a fanfic, but it could feature Harry Potter himself still as a central figure. Maybe he has new relationships with characters who are also deeply in love with magic.
Not having read 'The Magic Weaver' a Harry Potter fanfic, we can only speculate. The main character is most likely the one referred to as the Magic Weaver. This character might be a self - taught wizard or a wizard with a unique heritage that gives them this special ability to weave magic. There could be other important characters like a mentor figure who helps the Magic Weaver understand and control their powers. Maybe there are some antagonists too, perhaps jealous wizards who see the Magic Weaver's abilities as a threat. And of course, there's a possibility of cameo appearances from the main Harry Potter characters to tie the story into the original universe.
Most likely Harry Potter himself as he is in the title. And probably his friends like Hermione and Ron might also be important characters, still supporting him in this new 'king of magic' scenario.
Obviously, Harry would be one of the main characters. Since it's about him learning family magic.
Obviously, Harry Potter is one of the main characters. He is the one using the family magic. There might also be his friends like Hermione and Ron. They could be involved in helping Harry discover and master the family magic. And perhaps some of Harry's family members, either from the past or present, could also be main characters as they are related to the family magic.
Well, Harry Potter himself could still be a main character. Since it's about family alliances, his friends' families like the Weasleys would likely be important too. Hermione's family might also be involved, even if they are Muggle - born, as they could contribute in unexpected ways. And who knows, some minor characters from the original series might step up and become main characters in the context of the family alliances.
A young witch or wizard who discovers they have long - lost relatives in the wizarding world could be a main character. They would be on a journey to find and connect with these family members.
A member of the royal family could be a main character as well. For example, a young prince or princess who discovers their magical abilities or is drawn into the wizarding world. They would have to learn to balance their royal duties with their newfound magical identity. And then there could be a wizard or witch who acts as a guide for this royal person, like a Hogwarts professor or an Auror.