The Convent Prioris and the Convent Sanctorum were formed following the election of Sebastian Thor as Ecclesiarch of the Adeptus Ministorum, and his sweeping reforms in the wake of the insane High Lord Goge Vandire's tyrannical rule during the Reign of Blood.
In the wake of the mad High Lord Vandire's downfall, Sebastian Thor was declared Ecclesiarch, and instituted sweeping reforms to the Ecclesiarchy. The High Lords of Terra were fearful of a repetition of the Reign of Blood. and so the "Decree Passive" was issued, forbidding the Ecclesiarchy from maintaining "men under arms." Alicia Dominica, at Thor's order, formally founded the Orders Militant of the Adepta Sororitas, which adhered to the letter if not the spirit of the decree in that all its warriors were female.
Following Thor's Reformation of the Adeptus Ministorum, the newly founded Adepta Sororitas were split between the Convent Prioris on Holy Terra and the Convent Sanctorum on Ophelia VII. Both of these Convents are massive fortresses housing tens of thousands of Sisters. Those sisters still residing at San Leor were transported to the new convents, and the foundations of the non-militant orders were laid.
In time, the Orders Militant grew into larger and more powerful organisations and Sebastian Thor's successor, the Ecclesiarch Alexis XXII, decreed that the two Convents each be divided into two Orders Militant. The Convent Sanctorum was split to become the Order of the Fiery Heart, whose founder was Katherine, and the Order of the Valorous Heart, led by Lucia. In the mid-39th Millennium, Ecclesiarch Deacis VI created two more Orders Militant, the Order of the Bloody Rose in honour of Saint Mina and the Order of the Sacred Rose, founded in memory of Saint Arabella, based at the Convents Sanctorum and Prioris, respectively.
Orders of the Convent Prioris
- Order of the Cleansing Water
- Order of the Torch
- Order of the Holy Seal
- Order of the Sacred Coin
- Order of the Sacred Oath
- Order of the Lexicon
- Codex: Adepta Sororitas (6th Edition) (Digital Edition), pg. 13
- Codex: Sisters of Battle (2nd Edition), pp. 16, 18
- Dark Heresy: Blood of Martyrs (RPG), pp. 23, 39, 41, 77-78
- White Dwarf 293 (UK), "The Liber Sororitas," by Andy Hoare, pp. 53-54