Rowena would flee her village and abandon Fergus after she was charged with practicing witchcraft. Rowena then studied under the great Milanese witch Leticia D’Albioni and joined the [[Grand Coven]]. The Grand Coven were critical of Rowena having a child with a "non-magic", but they were willing to overlook this because of the great talent she possessed.
Rowena was expelled from the Grand Coven because her magic was considered too extreme; one [[spell]] she created was the ''Defigere Et Depurgare'', which was used to vanquish [[demons]]. Rowena's "unpleasantness" with the Grand Coven would ultimately lead to her being hexed by the coven with a binding spell that restrained her magic
and she was banned from performing magic, taking on students, or forming her own coven.
In 2014, 300 years later, Rowena
resurfaces to reclaim her lost power base. After being captured by Crowley, she makes several attempts to use him for her own ends. Crowley is aware of Rowena's manipulations yet captures the head of the Grand Coven, [[Olivette]], for her. Under torture by Rowena, Olivette reveals the Grand Coven is now much-diminished in its power because of a concerted campaign against witches by the [[Men of Letters]].
is initially antagonistic towards the Winchesters as she sees Crowley's relationship with them as diminishing his power. The Winchesters often call on her help with magic, and Rowena assists when she see a benefit for herself. Over time, she becomes an ally in their battles, albeit motivated by the benefit she sees for herself in helping them. Rowena has a particular bond with Sam - they were both tortured by Lucifer, and share the struggle of living with that experience.
she starts killing people and their reapers to get Death's attention . She blames herself for Crowley's death and the path that her abandonment led him down in life. During this, the reaper [[Jessica]] reveals that in the book [[Death]] keeps on her, it is written that she will die by Sam Winchester's hand. While death refuses to bring Crowley back, the experience ends with Rowena deciding that working for the greater good will be her redemption.
Rowena is killed twice by Lucifer - first in [[11.10 The Devil in the Details]] and later in [[12.23 All Along the Watchtower]] - but each time
resurrects herself by use of a [[ Resurrection Charm]].
In 2019, Rowena
sacrifices herself to banish the [[Hell Ghosts]] back where they came from, having Sam fulfill [[Death]]'s prophecy that he will kill her in order to save the world.