One theory for the A Court of Thorns and Roses series explains a lot about the Archeron sisters' lineage, but Sarah J. Maas' has yet to explore its full potential. The mother of the Archeron sisters is an elusive character; not much is known about her besides her poor treatment of her daughter Nesta and eventual death. However, a theory stating the girls' mother had fae lineage explains why Maas hasn't written much about her yet, and what effects this may have already had on the series.

With no clear information about the Archerons' mother laid out within the text, Maas may have withheld it to set up a shocking reveal during a future book in the A Court of Thorns and Roses series. If the Archeron mother did have fae lineage, it could explain why her daughters are so powerful, such as why Feyre possesses abilities (even as a human) that other fae don't. Besides a few canon ties to the fae world, other sly hints suggest that the Archeron mother came from a fae bloodline.

The Archeon Sisters' Mother Already Has Ties To The Fae World

Why Would Maas Include These Details In ACOTAR For No Reason?

19-year-old Feyre is the first of the Arhceron sisters to enter the fae world. The events of A Court of Thorns and Roses, specifically the early ones that bring Feyre to Prythian, seem like pure fate; they all lead to her eventually meeting her mate and becoming High Lady of the Night Court. However, while Feyre is still human, bits of information are revealed that suggest that her mother likely has some deep ties to the fae world. If this is true, it's likely this storyline will come into play in the next installment.

A character with an old fae name does not just become fae, let alone a fae High Lady, all by coincidence.

First, A Court of Thorns and Roses states that "Feyre" is an old fae name. For a human like Feyre to have a traditional fae name, one of her parents must have possessed some knowledge of the fae culture. Furthermore, a character with an old fae name does not just become fae, let alone a fae High Lady, all by coincidence. Maas' does not write about coincidences, but rather about fate, suggesting that this detail shouldn't be overlooked.

Additionally, in the first book, Lucien and Tamlin question Feyre about her knowledge of Prythian. They inquire as to why specifically Feyre's mother never taught her stories of the fae, rather than her father, who they know is the surviving parent. It is possible that Lucien and Tamlin can sense fae blood in Feyre, similar to when Manon senses witch blood in Elide in one of Maas' best Throne of Glass books.

The Way Magical Creatures Interact With Feyre Displays Familiarity

Even as A Human Feyre Is Able To Navigate The Fae World

One aspect of Feyre's character that has stood out since the first book of the series is her ability to interact with magical creatures. This helps her navigate Prythian even before she becomes fae herself. Feyre may not just be a natural when it comes to these interactions; rather, she has instinctive abilities because of her mother's fae bloodline. This would add more depth to the Archeron family's storyline and create additional chances to explore lore in A Court of Thorns and Roses' future while subverting tropes.

An example of Feyre's natural prowess is how quickly the Suriel appears before her in the first book. Lucien expresses disbelief that Feyre will be able to accomplish trapping the Suriel, but she gets it on the first try. The Suriel also suggestively approaches her, with Feyre letting it study her and deem her worthy:

Peeking above the ragged neck of its dark robes was a body of veins and bones, as dried and solid and horrific as the texture of its face. It let go of the snare, and its too-long fingers clicked against each other as it studied me.

In the next two books, the Bone Carver also interacts with Feyre in a way that undermines expectations. Supposedly one of the "old Gods" of Prythian and intimidating beyond belief, when Feyre actually meets the Bone Carver, they converse calmly and strike a bargain. This isn't expected and suggests that the Bone Carver possibly helped her because he could also sense Feyre's ancient fae lineage. If this is true, Feyre can expect to have more encounters with monsters that benefit the Night Court.

The Bone Carver Describes A Fae Warrior Survived By Human Descendants

The Bone Carver Would Know If Feyre Came From This Line of Human Descendants

When meeting Feyre in the third book, the Bone Carver further details information about his background, sharing information about a female fae warrior who trapped him under the mountain. He mentions that this warrior ended up having human descendants that still wander the continent today. Without intending for this information to be important, it makes no sense for Maas to take time out of this short scene just to provide a pointless backstory. Instead, this theory suggests Feyre's mother is a descendant of this fae warrior, with massive potential to further explore this storyline.

Feyre's mother descending from this fae warrior means that her daughters have fae blood coursing through their veins.

However, if Maas intends to reveal more about this fae warrior in future books, it would explain the lack of information from Maas about the girl's mother up to this point. Feyre's mother descending from this fae warrior means that her daughters have fae blood coursing through their veins. This could explain why Feyre, Nesta, and Elain are such powerful fae or why all three sisters received such overpowering abilities and mating bonds right away. It would explain why Nesta was not affected by Tamlin's glamor or why Feyre did not have an adverse reaction to the Ouroboros mirror.

Maas rarely leaves loose ends untied for long, indicating that more information about the Archerons' mother will be revealed eventually, perhaps in the A Court of Thorns and Roses TV show. This theory compounds textual in A Court of Thorns and Roses with creative reasoning to prove that their mother was in fact part fae, as it may be the only thing to describe how naturally her daughters fit into the fae world.