Our Vestry


Our Church thrives because of the energy, skills and background of the people who are a part of our leadership.

Fran Osborne - Church Warden

Fran has been a member of St. Marks since 2001. This is her second time to serve on the Vestry, both times as  Hospitality chair, and in this current term also serves as Church Warden. She also co-chairs the ESP program with Eileen Marks. When not at St. Marks, Fran can be found at Mt Kisco Child Care Center where she has been on the Board for 3 years and also is a member of the New Castle Historical Society where she is  past president. Cooking is Fran's favorite hobby along with gardening.

Elizabeth Schreiner - Church Warden

Elizabeth was born in Chile and has been in the US since 1969. She is a Peekskill resident and recently retired from Open Door, a Neighborhood Health Center, providing nutrition services to women and children (WIC). She has been a member of St. Mark’s Church since 2002 and previously served on the Vestry. She was elected to the Vestry again in January 2014. She is a member of the altar guild, loves to cook, and designs and creates handmade greeting cards.  



TBD - Treasurer



Kendall Atterbury

Kendall came to St. Mark’s in 2012 when she and her husband (Jason) moved to Mount Kisco. She is a social worker in New York City. Kendall has graduate degrees in Government/Political Philosophy, Theology, and Social Work. She is in the process of finishing her doctoral degree and is an occasional adjunct faculty member at Hunter College, CUNY.  Prior to becoming a social worker, Kendall worked as a coach for several high school and college rowing programs. She also worked at a shipyard in Seattle, WA and for a custom homebuilder in Charlottesville, VA. Kendall and Jason moved to the area from Boston, when Jason became head of the History Department at St. Luke’s School in New Canaan, CT. New to the vestry, Kendall looks forward to learning from and working with longer term members of St. Mark’s to continue to grow its welcoming faith community. 

Stephen BarlowStephen Barlow and his wife Jennifer began attending St. Mark’s Church in 1997 after moving to Westchester.  Steve is a Registered Architect in New York, New Jersey and Connecticut.  He has served as a consultant to the buildings and grounds committee by providing guidance for subjects related to the preservation of the building as well as donating his professional services for projects when needed.   He and Jennifer have 3 children Jarred, Olivia and Mason, all of which were baptized at St. Mark’s.  Jarred and Olivia were also recently confirmed at St. Mark’s. 

Grace Gibbons

Grace was elected to the Vestry in 2015; her husband Rob, a lawyer, has also served as a Vestry member. Grace, Rob, and their two daughters, Devon and Kendal, joined St. Mark’s in 2006. Devon, a college student, was confirmed at St. Mark’s in 2008 and Kendal, a middle-schooler, in 2015. Formerly, they were members of the Roman Catholic faith, but were in search of a more open and inclusive Christian church. They immediately felt that sense of community at St. Mark’s. Grace, who has a bachelor’s degree in history and worked for several years in the healthcare industry, began her education in landscape and floral design. She is now co-owner of a floral and landscape design company, GracefullyDone-NY, in Chappaqua. She is an active member of the Flower Guild and volunteers for many different activities at St. Mark’s.


Audrey Insoft

Audrey has been an active member of St. Mark’s since 2001. She served on the hospitality committee for many years and has contributed to a number of programs and activities including the Emergency Shelter Program, Taste of Our Towns, Carpenters Kids, Mt. Kisco food pantry, Christmas gourmet booth and greens, the rummage sale, and ushering. She and her husband, David, have one son, Alexander, who was baptized and confirmed at St. Marks. After working in the insurance industry for 25 years and earning her Master’s degree in adult education and instructional design, Audrey is now a stay-at-home mom and author of a nonfiction book, “Divine Fate.”   She looks forward to using both business and writing skills in her new vestry position.


Eileen Marks

Eileen and her husband Glenn are long-term residents of Mt. Kisco. She is currently the Director of Business Affairs at a firm that specializes in servicing the Advertising and Entertainment Industries. Over the years, she has worked in the TV Production, Creative and the Business Management side of Advertising and has developed training programs and facilitated webinars and seminars for Clients and staff. Eileen has worked with St. Mark’s in support of The Emergency Shelter Partnership since 2011, and served on the board of ESP as a Representative for St. Mark’s from 2014-2017. She enjoys all the activities at St. Mark’s and has worked on Hospitality and various other committees. This is the second time Eileen is on the Vestry, having served 2013-2014.

Ann Natale

Ann and her family have made St. Mark’s their spiritual home since 2001, following their move from Manhattan.  An active social service volunteer, Ann has been involved with the various outreach missions of St. Mark’s over the years.  Her most significant commitment has been to The Mount Kisco Interfaith Food Pantry where, as St. Mark’s representative to the Pantry Board, she has served for more than 14 years, including two years as President, five years as Treasurer, and seven years as grant writer.  Since 2014, she has also been an active member of the Advisory Committee to Episcopal Charities, Diocese of NY.  Ann and her husband Robert live in Chappaqua.  Their son Nick, who attended St. Mark’s Sunday School and sang in the junior choir, now attends college in Virginia.



Rosemary Valenti

Rosemary Valenti and her family have been members since 2009. She was formerly from a Roman Catholic background but feels the Episcopal Church embraces her ideas of fellowship, is broadly inclusive, and welcoming. Soon after coming to St. Marks she joined The Flower Guild and continues to remain fully committed to that effort while branching into other areas of the church. The Valenti family resides in Chappaqua. Rosemary is married to Marc with two sons Matthew & Christopher. They enjoy contributing to a variety of events, a favorite of Marc's is volunteering each year in the kitchen at the Annual Christmas Dinner. Their son Matthew was a Acolyte for many years prior to college. Both Matthew and Christopher received their Confirmation through Saint Mark's Church. Rosemary and Marc are in the Advertising Sales Business owning their own company in Manhattan for over 20 years, specializing in Out-of-Home Advertising sales placing advertisers within the unique media of: Buses, Billboard, Ferries & Ferry terminals in New York and New Jersey area.


Susan West

 Susan West lives with her son Zhenya in Ossining and is a cradle Episcopalian who was baptized and confirmed at St. Matthew’s, Bedford, married at St. Luke’s in Katonah, and first came to St. Mark’s in Bill Heffner’s time when she drove her elderly father to services there. She attended Cecily Buckley’s Bible Study for ten years, and currently attends a weekly Bible Study at St. Matthew’s. She has friends in all three parishes, and in December went on a two week pilgrimage to the Holy Land with friends from St. Matthew’s and her daughter Sophia, who was confirmed at St. Mark’s.


Susan worked a staff nurse, case manager, clinical specialist, and nurse researcher for thirty-two years at the Department of Veterans Affairs and the Visiting Nurse Service.


At St. Mark’s she is a lector, hospitality volunteer, lay Eucharistic minister, member of the Music Committee, and new member of the Altar Guild. On the Vestry she looks forward to helping with worship, education, music, and hospitality. She hikes with her dogs in local parks every day of the year, and also loves writing, art, and museums.

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