Sister Mary Glenn, OSB was born in Port Angeles, WA, and began religious life in 1965 at the Visitation Monastery in Federal Way, WA. In 1971 she moved to western Colorado to begin a new monastery. In 1978 she and another sister became an independent religious community under the Bishop of Pueblo. They lived a simple lifestyle and offered retreats and hospitality to local groups.
In 2009 Sister Mary joined Benet Hill Monastery and lived in Whitewater as a mission of Benet Hill. She enjoyed working on the property at Kannah Creek, cutting wood and making fires in the wood stove, and offering spiritual direction to her guests.
Today she lives at the monastery in Black Forest with her other sisters.