Board of Directors & Staff

SUSAN LYNNER
Susan Lynner is Chair and Secretary of the Board. She retired as a senior vice president in the Washington Research Office of Prudential Equity Group, LLC, in March 2007, following almost 20 years of service offering institutional investors a broad perspective on federal legislative, regulatory and judicial developments affecting individual companies and industries, chiefly in the fields of telecommunications and media. Prior to her tenure with Prudential, Susan worked as a consultant on trade policy for Newmyer Associates and on technology transfer issues at the Commerce Department’s International Trade Administration. Susan has a bachelor of arts from Allegheny College.

Susan bought her house on Newark Street in 1998 after living in Woodley Park for ten years. She served on the board of the Cleveland Park Historical Society (CPHS) from 2002 to 2007.  She edited the CPHS newsletter Voices for three and a half years.  In addition, Susan put her house on the CPHS October 2003 house tour and her garden on the CPHS May 2006 garden tour.

Susan also serves on the board of Opera Lafayette, an American period-instrument ensemble based in Washington, DC, dedicated to performances of 17th- and 18th-century operas, particularly the French repertoire.

TAMARA BELT

Tamara joined the Board in 2010 and serves as Vice Chair and Landscape Committee Chair. She owns Hawthorne Garden Design, which specializes in high-end residential landscape design in the DC metropolitan region.

Before earning her degree in landscape design, Tamara was an environmental economist at the World Bank and the Inter-American Development Bank for over ten years, where she focused on projects in the environmental sector, such as establishing protected areas in Asia, promoting ecotourism in Brazil and Bolivia, and designing afforestation projects in Central America. She earned her Ph.D. in economics from the London School of Economics.

A native Spanish speaker and half-Colombian, Tamara also previously served as PTA co-chair at the Oyster-Adams Bilingual School. Tamara is married to Sean Greene, and they live in Woodley Park with their three children. She is delighted to be able to support the restoration of this neighborhood treasure.

NICK NETCHVOLODOFF
Nick Netchvolodoff serves as Treasurer of the board. Nick worked in finance at several telecommunications companies, including MCI Corporation and PSINet, and was a vice president at Lehman Brothers and Barclays Capital before starting an independent financial consultancy in 2010. Nick earned a B.A. in mathematical economics from Brown University and is a certified public accountant.
Nick and his wife Cathy Livingston have lived and raised their two children in Cleveland Park since 1996. Nick was the immediate past President of the Cleveland Park Historical Society.

LYNN PARSEGHIAN, Executive Director
Lynn Parseghian joined Tregaron as executive director in 2015 with 20 years of experience practicing law in Washington at the law firms of O’Melveny & Myers LLP and Crowell & Moring LLP, in areas ranging from class action and antitrust litigation to environmental law. Lynn served for many years as outside general counsel to the Corcoran Gallery of Art and School of Art & Design, counseling the museum and school on a wide range of matters including exhibition and publication contracts, special events, contractors, insurance, and employment and student issues.

Lynn has held a number of leadership roles in DC’s nonprofit and philanthropic communities. She currently serves on the Board of Directors of Washington Performing Arts, serving on the Executive Committee and chairing the organization’s 2023 strategic planning process. For seven years, she served on the Board of Cultural Tourism DC, including as Treasurer and Chair of the Development Committee. In 2012, she was appointed as the organization’s Interim Executive Director, leading it through the annual gala and major events planning season. She also served for nine years on the boards of Adventure Theatre MTC and the Young Women’s Project.

From 2007 to 2019, Lynn was a member of the Rainmakers Giving Circle of the Washington Area Women’s Foundation. She co-chaired the Circle for two years, managing its grant-making, assessment and educational activities. She also volunteered for many years at the Maret School on the Endowment Campaign, Annual Fund, and in other roles, and worked with the faculty on environmental education projects.

Lynn holds a B.A. in English from the University of Pennsylvania and a J.D. from the University of Chicago. She and her family enjoy living in Cleveland Park.

LIZZIE EDGEWORTH CANTACUZENE
Lizzie Edgeworth Cantacuzene brings over 25 years of development and special events experience to the board. Lizzie has worked for the Maret School, where she served as Assistant Director of Development and as Archivist/Book and Film Coordinator for the school’s centennial celebration. Lizzie served as Director of the Heritage Society (Major Gifts) for the National Trust for Historic Preservation, planning events and cultivating major donors. She currently serves on the board of the Bishop Walker School.

Lizzie’s other board experience includes serving as the first Development Chair of the Tudor Place Historic Home and Gardens. She served on the Child Health Center Board of the National Children’s Medical Center. She has also volunteered for Horizons Greater Washington, the Washington Winter Show, THEARC, and the Beauvoir School.

Lizzie received her B.A. in Art History from Washington College. She lives in Cathedral Heights with her husband and three children.

PETER COLARULLI

Peter Colarulli is Vice President, Acquisitions and Development for Snell Properties, where he leads acquisitions and oversees renovation and development projects. Earlier in his career, Peter worked for CWCapital and The Bozzuto Group. He received a bachelor’s degree from Amherst College and a master’s in business administration from University of Cambridge’s Judge Business School. Peter previously served on the board of the Scholarship Fund of Alexandria. A native Washingtonian, he supports the Nats, Caps, and Wizards (in good times and bad).

Peter lives near Tregaron in Woodley Park with his wife, Katy, their two children, and a poorly behaved French Bulldog.

MARTHA COVEN

Martha Coven joined the Tregaron board in 2023. She is a longtime resident of Woodley Park, where she lives with her husband, two children, and springer spaniel. She is a Visiting Professor at the Princeton School of Public & International Affairs, the author of Writing on the Job: Best Practices for Communicating in the Digital Age (Princeton University Press, 2022), and the founder of Coven Consulting LLC, a consulting practice serving nonprofit and philanthropic clients. Earlier in her career, she served in the Obama White House and as a congressional aide. She holds a B.A. in economics and a J.D. from Yale University.

SOPHIE HAWKINS

Sophie Hawkins is a member of the Board of Trustees of the Washington International School and also serves on the board of the Hillwood Estate, Museum & Gardens as Assistant Treasurer.

She holds degrees from Princeton University and Northwestern University’s Kellogg School of Management. Sophie worked at Merrill Lynch and UBS prior to becoming a full-time mother. She lives in Washington, DC with her husband, Val, and two daughters.

NICHOLAS HILL

JIM MYERS

DENISE SCHLENER
Denise Schlener is Principal Consultant of Transition Leadership Partners and Chair of the Board of the Wilderness Land Trust. Most recently, she served as Interim Chief Operating Officer of Polaris, an organization dedicated to ending human trafficking. She previously served as Chief of Staff to the COO of the Humane Society of the United States and as Vice President for Strategic Advancement at Island Press, a nonprofit that provides ideas and information to those seeking to protect the environment. Denise was previously the national director of the Land Trust Alliance. She also served as director of The Trust for Public Land’s Chesapeake and Central Appalachian Field Office. 

Prior to coming to Washington, DC, Denise led the Connecticut Chapter of The Nature Conservancy; created and directed a finance program for the Open Space Institute that supported landscape scale conservation purchases in New England and New York; and opened and led the Connecticut office of the Connecticut River Watershed Council.  She also served as director of foundation relations for the Natural Resources Defense Council in New York and director of development for environmental programs at Yale University.  She is a co-founder and former director of the Connecticut League of Conservation Voters.  She has an undergraduate degree from Middlebury College and a masters of forest science from the Yale School of Forestry and Environmental Studies.

SAULEH SIDDIQUI

Sauleh joined the Board in 2023 as the Advisory Neighborhood Commissioner (ANC) for single-member district 3C05, in which Tregaron is located. He has lived in Cleveland Park since 2013 and is a big fan of the outdoor green space that Tregaron provides for families like his who don’t have access to it where they live. His love for the environment is built upon his day job at American University as an associate professor of Environmental Science. Beyond serving on the ANC, he previously served on the board of the Cleveland Park Citizens (now Community) Association, where he was chair of the Transportation Committee and inaugural co-chair of the Diversity, Inclusion, and Equity Committee. He has volunteered for our community in several ways over the past several years, and is excited to be a member of the Tregaron board. He received an A.B. in Mathematics and Public Policy from Franklin & Marshall College and a Ph.D. in Applied Mathematics & Statistics, and Scientific Computation from the University of Maryland, College Park.

FRANK SWAIN

DALE TEMPLE
Dale Temple is director of Facilities and Operations at the Washington International School.  Prior to his arrival at WIS in 2013, he was facilities director of the Association of American Medical Colleges.  Before moving to Washington,  Mr. Temple was facilities director at Seattle Country Day School from 1999-2010. Earlier in his career, he worked for the IKEA N.A. Group and for the University of Idaho. He received his B.S. from West Chester University and his CFM from the University of Washington.

MELISSA VANOUSE

Melissa joined the Tregaron board in early 2020. She is a Washingtonian and graduate of nearby National Cathedral School. Melissa’s professional career focuses on financial institution regulation, where she has worked for over 15 years on diverse supervision and risk management issues. She has a strong interest in the environment and enjoys spending time outdoors; she has identified more than 60 species of birds in her backyard. Melissa enjoys Tregaron for birding and relaxation with her husband and two young daughters.

Melissa received a B.A. in International Relations, with minors in Economics and Latin American Studies, from the University of Pennsylvania and a Masters in Public Policy from Harvard Kennedy School. 

BARR WEINER