The Order was founded in 1210 by Blessed Theodore de Celles and companions. The name Crosier is derived from the French word croisés—signed with the cross. In medieval England, Crosiers were known as the Crutched (crossed) Friars. The designation refers to the cross and the spirituality of the Order.

The primary feast day of the Crosiers, the Exaltation of the Holy Cross, reflects a spirituality focused on the triumphant cross of Christ and our glorified Lord. A distinctive mark of the Crosiers is the red and white crusaders’ cross worn on the scapular of our religious habit.

The Order’s history can be divided into three periods.