St. Gregory the Great Parish is located in Williamsville, New York and is part of the Diocese of Buffalo. St. Gregory's is a Roman Catholic Faith Community, a Respect Life Parish and is under the direction of Rev. Leon Biernat, our Pastor.
St. Gregory the Great Parish, a large and diverse Faith Community, affirms the presence of Christ in the Eucharist and among us. We sustain our vitality through shared experiences of prayer, sacrament, liturgy and service. We dedicate ourselves to being a vital part of the Church in the Diocese of Buffalo by maintaining and expanding our:

Spiritual focus
Knowledge and understanding of our Faith and our Church
Spirit of welcome and reconciliation
Compassion and concern for those in need
Generous sharing of our God-given talents and resources.