Meet Our Staff

David Sleeper

Executive Director

David joined the staff of OHF as Executive Director in February 2025. After graduating from Yale University with a B.A. in American Studies, he embarked on a career in communications and nonprofit administration. He was a communications associate at the Conservation Foundation; Managing Editor of Blair & Ketchum’s Country Journal magazine; and Editor and Publisher of Vermont Magazine, which he founded in 1989. In 2001, he moved to Pomfret, Vermont (the first of three OHF communities in which he has lived, along with Hartland and Woodstock) to work as Director of Marketing and Development for the Vermont Institute of Natural Science, where he had served as a trustee. Following that, he was the Executive Director of the Hubbard Brook Research Foundation for 12 years, before leaving to start his own conservation consulting business. David is a member of the Vermont board of the Conservation Law Foundation and an officer on the boards of Taftsville Community Trails and the Taftsville Cemetery Association. David’s wife, Cronin, is owner of the Plum Tree School preschool, which she started in 2008. The couple has three grown children and eight grandchildren.

Grace McKeon

Administrative Assistant

Grace joined OHF in 2025. She is a 2017 graduate of Woodstock Union High School and holds a degree in Public Health from Plymouth State University, with a triple minor in Global Healthcare, Psychology, and Women, Gender, and Sexuality Studies. She is also a licensed Esthetician. While in college, she was deeply involved in student leadership and advocacy, serving as Title IX Intern, Secretary for the Sexual Assault and Violence Education Alliance, Student Advocate, and Public Health Club President. In 2021, she was honored with the Powerful Outstanding Woman Advocate Award for her leadership and advocacy work. Grace began her career as a care coordinator with two startups that grew to become two of the largest metabolic tele-health platforms in the US. But her true dream was working for an organization that is making healthcare accessible and affordable—a commitment strengthened after her time living in Western North Carolina where she experienced the impact of Hurricane Helene. Now relocated back near family in Woodstock, she enjoys exploring all that New England has to offer with her family, her partner, Noah, and their dog, Pippin.

Lizzie Coelho

Grants Coordinator

Lizzie Coelho became OHF’s full-time Grants Coordinator in January 2025, having served in that role in an interim capacity previously. After receiving an undergraduate degree from University of Redlands, Lizzie had the opportunity to spend time in Central America volunteering with children in remote areas as a teacher, learning culture, customs, and Spanish. Following her time abroad she attained a master’s degree in social work from the University of Baltimore-Maryland, specializing in management of nonprofit organizations and community relations. She moved to Bridgewater in 2021 to raise her four children. Coelho is a member of the joint Woodstock Elementary School and Prosper Valley School Parent Teacher Organization (PTO). Additionally, she is a talented athlete, having competed in water polo and swimming while growing up and now playing pickleball competitively in Woodstock and throughout New England.