Aurelius Dumbledore's aunt

These are some headcanons I have about Fantastic Beasts and Where to Find Them, in no particular order:

• Mary Lou knew that Credence was magic, but only because she thought his mother was Irma Dugard - a half-elf, half-witch would certainly be "wicked" and "unnatural" in her book.

• Leta used to hold her breath under water for as long as she could.

• The only people Credence ever truly cared for were Modesty, Nagini, and Aberforth.

• In present-day, Credence isn't very well-known, because most people don't know that Credence Barebone and Aurelius Dumbledore are one and the same.

• Credence, due to being the one to most often care for Modesty, is surprisingly good with children.

• Credence's aunt on the ship who drowned trying to save Corvus was actually his mother; she only said she was his aunt because she wasn't about to announce that she was the unwed mother of the child she had with her.

• Chastity was a Squib whose magical parents abandoned her in a No-Maj orphanage after they realized she didn’t have magic, only for her to be adopted shortly afterwards by Mary Lou Barebone.

• Aberforth holds a grudge against Ilvermorny School of Witchcraft and Wizardry, and against the entire Magical Congress of the United States, because Ilvermorny never detected Credence, and because of how badly MACUSA handled Credence’s case, even in present-day, nearly a hundred years later.

• Leta's father purposely sent his son to Mary Lou, figuring that Yusuf Kama would never suspect that young Corvus was in the care of a magic-hater, and that he would come retrieve him once it was save. Only, when he came to get his son back, Credence was there instead.

What if Credence’s aunt on the ship was actually not his aunt, but his mother?

This would explain why she never shows up, why she didn’t come with Aberforth to claim their son. She’s long dead.

Credence’s mother gets sent away from Godric’s Hollow. At some point after he was born, she and her son go to America for some reason. Now, obviously she’s not going to tell others that she’s the unwed mother of the child she has with her. So she says she’s his aunt, taking him to America because his parents died or something.

Then she drowned trying to save the baby she thought was her son. Aberforth would have received word that both her and their child were dead. He wouldn’t find out that Credence was actually alive for years and years.