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The Rev. Dr. Gawain F de Leeuw, OA


Fr. Gawain has been the pastor of St. Bartholomew's since August, 2001. The focus of his ministry is to build a spiritually vibrant, joyful, and generous congregation through stability, transformation, and hospitality. He is a member of the Order of the Ascension, a Christian Community dedicated to building healthy parishes working for justice. He serves on several boards that work for stronger, healthier communities. He was graduated from Oberlin, the The Divinity School of the University of Chicago, General Theological Seminary, and Seabury-Western. He serves on the boards of Meals on Wheels, the Housing Action Council, Planned Parenthood, and Westchester United. In 2014 he was a Sinai and Synapses fellow, bringing together scientists and faith leaders to discuss the intersection of science and religion. He is currently writing on the intersection of the market and Christian discipleship.

Fr. Gawain has studied cooking at the International Culinary Center, has two certificates in wine studies, plays violin, and is a salsero. He has also performed comedy at Stand Up NY, Gotham, and the Broadway Comedy Club.

Rita Mathsen

Music Director

has served St. Bartholomews since 2006. She received her vocal training at the Academy of Vocal Arts in Philadelphia, a student of Nancy Williams (Bernstein’s favorite mezzo!) and went on to study in Italy with renowned opera stars, Carlo Bergonzi and Renata Tebaldi. Rita sang professionally for over 10 years before meeting her husband, a Lutheran Pastor in White Plains, and settling down to family life. She has two wonderful children in college.

She still maintains an active performing schedule in addition to her teaching studio ( She believes that everyone is capable of singing and that “those who sing pray twice”! Music at worship should inspire the congregation and also give them a glimpse of the glories of heaven.

She is a wonderful cook, and even appeared on Emeril, live!

If you are interested in auditioning for the choir, please contact Rita at

Bruce Betts


As Warden, Bruce ensures that the building is managed and that the church functions. Raised Episcopalian, he grew up in Wisconsin, studied Music in NY, and worked in the medical field. Bruce loves the church, church music, and cheerfully challenges the rector.

Kathryn Wallace


A cradle Episcopalian, she has attended St. Bartholomew's since 2003 and has served on the vestry and as warden. Kathryn used to work in PR, and is a proud Cornell graduate. Married to Scott, with two delightful kids in Anne and Jackson. She tap dances, loves a great Barolo, and handles the cash. Sometimes you'll see her shoveling.

Russ MIchel

Interfaith Zen Coordinator

Raised in the Orthodox tradition, I lead the interfaith zen meditation in the tradition of a Jesuit, which Fr. Gawain encouraged me to begin in 2001. I'm married to TC and have two wonderful kids. I love sailing. Zen has made me a better Anglican.

Robin Bradley

Wedding Coordinator

Life long parishioner St. Bartholomew's Church. Midwife in private practice. Mother of four, grandmother to one. Avid needleworker, whether it's knitting or needlepoint- not a fan of crochet. Love throwing a great party.

Arthur Bonagura

Soup Kitchen Coordinator

I was raised a Roman Catholic, but entered the Episcopal Church because of it's dedication to helping the least among us. I did logistics and risk management for New York Life before I retired. I love opera and independent movies, and am married to Nancy. I'm not sure if I believe in God, but I do believe that we are called to help the indigent, and am glad St. Barts is dedicated to this blessed ministry.

Karin Almquist

Animal Ministries Coordinator

I was born and raised in The Bronx with a strong religious foundation from the Lutheran tradition (Missouri Synod). While that foundation gave me a great start on my spiritual journey in life, The Episcopal Church has strengthened my spiritual life tremendously. I began coming to St. Barts in January 2007, was received officially into the Episcopal Church by Bishop Roskam in 2009 and have not looked back. I have served on the vestry as well as being Warden for 4 years. The Episcopal Church is where my heart & soul is.

I enjoy and value all of God’s creations, especially nature and all animals. We celebrate St. Francis Day, with the Blessing of the Animals. This event blesses our beloved pets and celebrates all of God’s creatures with a special visit from the Two By Two Zoo.

We hold events such as a Pit Bull Seminar (helping to dispel negative understanding of this wonderful breed), and a Bereavement service to honor the passing of our beloved pets. We protested the Circus at the County Center to highlight Elephant abuse. We support the Hudson Valley Pet Pantry and partner with them on helping them grow in their mission.

We look to growing the ministry with others in the community who also feel the need to help and support all Gods creatures. Come join us!

Susan Pfeifer

Sunday School Coordinator

I was born and raised on Long Island in the Lutheran tradition (ELCA). I moved to White Plains in 1986. Started attending St. Bart’s in 2007. I am an LEM (Lay Eucharistic Minister), I am a member of the St. Bart’s Women’s Group. I teach Sunday School the 1st Sunday of every month.

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