The Roman Catholic Community of
Most Holy Trinity – St. Mary

138 Montrose Avenue
Williamsburg, Brooklyn, New York,11206

Comunidad Católica de La Santísima Trinidad – Santa Maria
Parafia Przenajświętszej Trójcy – NMP


Ministering to the people of Williamsburg, Brooklyn, New York
for more than one-hundred and sixty years

Served by Conventual Franciscan Friars, Franciscan Missionary Sisters of Assisi


and many dedicated lay people !

An historic parish in the Diocese of Brooklyn, New York

Welcome to our site!


Site Map


Current Events

Pastor's Welcome

General Information


St. Mary's, Maujer Street

Liturgy and Sacraments

Ministries and Activities

Youth/Young Adult Ministry

Parish Calendar

Clergy and Staff

Religious Education

Human Service Center

School (now closed)


Ministry Schedules

Photo Gallery


Tour of the Church

Franciscan Friars at Trinity

Franciscan Missionary Sisters of Assisi at Trinity

Dominican Sisters at Trinity

Marianists at Trinity

Alumni Association


"Haunted" Trinity?

Our Neighborhood



Most Holy Trinity Church has been on Montrose Avenue in what is now known as East Williamsburg, Brooklyn since 1841; that year, the renowned Father John Stephen Raffeiner founded the parish, built the first church, and began his ministry among the German immigrants of Williamsburg.  Six blocks away, on the corner of Maujer and Leonard Streets, the Church of the Immaculate Conception of the Blessed Virgin Mary (commonly called "St. Mary's") was founded in May of 1853; the first pastor of St. Mary's, the Rev. Peter McLoughlin, heroically served the Irish immigrants under his care.  Both parishes, two of the oldest in the Diocese of Brooklyn, had long and very proud histories.  On September 1, 2007, the two merged forming the new parish of Most Holy Trinity – St. Mary.   To this day, we at Most Holy Trinity – St. Mary continue our long-standing and enduring traditions of serving immigrants and the people of our culturally diverse neighborhood.  After the heyday of the German and Irish presence in East Williamsburg, both parishes ministered to diverse ethnic communities.  For a significant part of their histories, especially during the mid-twentieth century, both were home to many Italian-Americans.   We have also been and are now home to those who have immigrated from other parts of Europe and from Asia; we are home to African-Americans, Puerto Ricans, Dominicans, Ecuadorians, Mexicans and people from other Spanish-speaking countries.  In recent years we have been blessed with the arrival of people from Poland, one of the newest immigrant communities to settle in our area.  Looking to the future, it is evident that our neighborhood continues to attract a diversified community of people, the newest of whom are known as "young urban professionals" and  "hipsters."  We continue to serve and to welcome all who come to the doors of the parish of Most Holy Trinity – St. Mary.  You too are welcome to our home.  Thanks for visiting our site, and we hope to see you soon!    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Are you searching for sacramental or cemetery records?

CURRENT SACRAMENTAL RECORDS: If you are in need of a copy of a baptismal, first communion or confirmation record for yourself or your child, please send your full name (and/or your child's full name), birth date, the dates of the sacraments received (if known), and parents' full names along with a suggested donation of five dollars each to the attention of our parish secretary, Ms. Lucy Deras (see the address at the top of this page).

HISTORICAL SACRAMENTAL RECORDS:  If you wish to obtain copies of a baptismal, first communion and/or confirmation records for genealogical purposes (i.e., you are searching your family history), please send as much information as is possible about the individuals you are researching (i.e., the full names of each individual, their birth dates, the dates of the sacraments received (if known), and their parents' full names (if known).  There is a required fee of ten dollars for each individual genealogical record for which we are asked to search.  Please send inquiries to the attention of our parish secretary, Ms. Lucy Deras (see the address at the top of this page).  We can make no guarantee that the records will be found as requested, and we need to inform you that such searches cannot be done immediately.  These searches are done on a "first come, first serve" basis and can only be done when we have the time and the personnel available to complete them.  Please include your address and phone number so that we can mail you the requested historical records and/or call you if there is a need for more information.

CEMETERY RECORDS:  Our parish cemeteries (Most Holy Trinity Cemetery, Brooklyn, NY and Trinity Cemetery, Amityville, Long Island, NY) are now under the care of Catholic Cemeteries of the Roman Catholic Diocese of Brooklyn.  Please direct all inquiries to: Customer Service Department, Catholic Cemeteries, 80-01 Metropolitan Avenue, Middle Village, New York 11379, Telephone: 718-894-4888, Fax: 718-326-4105.  We do not maintain any burial or cemetery records in our parish office.

Our Friars

The Conventual Franciscan Friars of the Our Lady of the Angels Province, USA, serve the people of Most Holy Trinity--St. Mary.  Frs. Timothy, Santo and Mietek were assigned to the parish and resided together at the Most Holy Trinity Friary from 2009 until 2014; in September of 2014 a new community of friars came to the parish, including Fr. Mietek who stayed along with Frs. Pedro, Justin, Russell, Nick and Greg.  Some of the newer friars were called to engage in ministries outside of the parish, but they, alongside of the Franciscan Missionary Sisters of Assisi who also reside at Trinity, continue a wonderful tradition of the Franciscan presence on Montrose Avenue.

Click here to go to our page dedicated to the Franciscan Friars at Trinity



Thank You and God Bless You for visiting

The Roman Catholic Community of Most Holy Trinity – St. Mary!

If you wish to contact us please send email to


An Urgent Request:  Please Help Us to Save and to Restore our Bell Towers; Emergency Repairs and Preservation Work Has Begun.   Click here for more information.  Thanks!



Last Updated: Tuesday, January 8, 2013 02:01 PM

Site Design by Fray Teo,  © 2005 Most Holy Trinity Church, Brooklyn, New York   [ Disclaimer ]