who are communicants of the Episcopal Church, churches in communion with it, or churches who are in the Historic Episcopate. Members undertake a Rule of Life, incorporating the Rule of Prayer and the Rule of Service. By reaffirmation of the promises made at her Confirmation, a Daughter pledges herself to a lifelong program of prayer, service and evangelism, dedicated to the spread of Christ's Kingdom and the strengthening of the spiritual life of her parish.

The Order was founded on Easter Even, April 14, 1885 in Holy Sepulcher Church (now Church of the Resurrection), New York City.

The National Council DOK is made up of an executive board, committee chairmen and eight provincial representatives. The national headquarters of the Order is in Marietta, Georgia.

St. Matthias' chapter was chartered in 2007.