It really depends on the order, but most of the time, the Superior has the final say in the religious name bestowed. In many orders that I have looked at, the soon-to-be novice gives a list to the Superior that contains three names that they like. Mother Superior prays about it and listens to what the Holy Spirit says. It can be a name that was listed or a name that is better suited for the candidate.
When I applied to the Carmelite Sisters of the Divine Heart of Jesus in Wauwatosa, WI, I was told that each Sister gets to choose her own name for her clothing, but it obviously cannot be the same name as another Sister.
I am currently discerning with the Religious Sisters of Mercy of Alma, MI and I believe that their method is the first one. If I had to submit three names right now, they would be:
Sr. Mary Elizabeth (after St. Elizabeth of the Visitation and St. Elizabeth of Hungary)
Sr. Mary Rose (after St. Rose of Lima)
Sr. Marie Therese (after St. Therese of Lisieux)
I won’t be surprised if I get named after St. Therese in religious life. I’ve been fascinated by her since the beginning of my discernment.
