In 1010, within a decade of the founding when all four founders were still in harmony, there were three sisters: Morag, Isla and Eileen Weird. All three of them were sorted into Slytherin House and looking at them, Godric Gryffindor, Rowena Ravenclaw, Helga Hufflepuff and Salazar Slytherin could tell they would be trouble, both good and bad.
Morag was the ringleader although she didn’t look it, seemingly quiet, serious and well-behaved. She was extremely talented and in her fourth year, became an Animagus, a grey cat as well as having most of the teachers around her little finger. She had black hair, dark beady eyes and a hooked nose.
Isla was the middle sibling. Mischievous and almost always in detention for something or other, Isla is as much a Gryffindor as Slytherin and actually was a hatstall between Gryffindor and Slytherin. She laughs when she is caught, an insistent cackle. Above all, she loves potions and creating new ones, an inventor’s delight and fervour gleaming in her blue eyes as smoke is wreathed in her light brown curls.
Eileen was the youngest. Haughty, arrogant, charismatic, convincing and above all, ambitious, Eileen was talented in divination from the age of eleven. She isn’t the teacher’s pet as Morag is and definitely not the troublemaker Isla is but Eileen is far more introspective. After a few nightmares from her visions in the dormitory she shared with her sisters, she woke up Helga who ran to her bedside. The day after, Eileen started to take private divination lessons with Rowena. Her slate grey eyes were far less haunted, her auburn hair seeming more glossy and less listless.
After they graduated, Morag, Isla and Eileen start wandering the Scottish Highlands, using their magic to survive and using their skills; transfiguration, potions and divination to creep up on strangers with prophecies and visions. Around two years into this nomadic life, they hear Salazar Slytherin left the school, leaving a monster under the school to purge the unworthy. They lived in caves, in hamlets, claiming sanctuary in churches, dells in hills or out in the moors. They had the food they could capture with a mixture of magic and snares and no guarantee of having a roof over their heads in the tough Scottish Highlands.
Fate collides when one day, they charge themselves with speaking to a War General named Macbeth, the husband of Gruoch who was incidentally in Slytherin with Morag, Isla and Eileen, in the year below them. They start a chain of terrifying violence, beginning with a murder of a king by Macbeth on the instructions of his wife and ending with Macbeth’s own death. Morag, Isla and Eileen weren’t feeling guilt for the bloodbath they unleashed but for the death of Lady Macbeth, Gruoch, their housemate and friend.
They part ways a little but still keep in contact. Morag sees a Gryffindor half-blood by the name of Edwin Steward living in a hamlet, pretending to be a normal blacksmith. Morag helps him in the work as a way to earn her keep but after a year, marry. They have three children; Ethelred (a squib), Edgar and Emma. Morag rarely uses her grey cat form.
Isla, since graduating had been keeping in contact with Alfred Parkinson, a pureblood and a Slytherin. Isla found him on her travels in England building himself a Burgh of fellow witches and wizards. Isla, after trying to burn it down several times, moves in and after three years, they marry and have two children; Ailith and William. William would become the first of the Parkinson pureblood family rising to notoriety.
Eileen doesn’t settle for marriage. Instead, she makes an abbey in the highlands for Witches to pretend to be nuns to avoid persecution. By the end of her life, Eileen has over a hundred witches living behind her walls, pretending to be nuns. Eileen knows the advantage of bloodlines though so finds the most powerful wizard she can find in the North of Scotland. She finds a man but Eileen doesn’t remember his name. She has one child, a girl named Mary.