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Kayla Anthony

Executive Director

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Lauren Wegrocki-Smith




Lauren Kain

Road Scholar Director

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Michael Muehlbauer

Grumblethorpe Operations Manager


Megan Thibodeaux and Tim Urschel

Hill-Physick House Site Managers

Megan Thibodeaux

Rentals Coordinator


Mackenzie Warren

Education and Programs Coordinator


Judy Smith

Powel House Assistant Site Manager

Lynn & Paul Gluck

Historic Waynesborough

Site Managers


Kelly Altricher and Nick Stepnowski

Grumblethorpe Site Managers


Margaret Wilmerding 

Grumblethorpe Youth Volunteer Mentor


Gregory P. Montanaro,  Chair

John Ventura, Vice Chair

Timothy M. Alles, Treasurer

Dawn Tancredi, Esq., Secretary

Jonathan K. Bitting
Lori Cohen

Gregory Cranford

Justin Detwiler 
Bishop David G. Evans

Frank Giordano

Thomas Hemmerick

Stephen S. Lee

Norman S. Marcus

Robert Marshall

Caroline Mills

Elizabeth Streitz Powel

Robert S. Powel

Becky Sitarchuk

Cortright Wetherill III

Charles P. Keates, Esq., Chair Emeritus

A board field trip to Mount Vernon- April 2015



Charles P. Keates, Esq., Chair Emeritus,

speaks at the 87th annual meeting 


Tom McCabe, John Ventura, and Greg Montanaro



Powel House: Margaret Lonzetta

Grumblethorpe: Norman Marcus

Hill-Physick House: Becky Sitarchuk

Waynesborough: Robin Koslo-Stahl


*FY 2019-2022


David B. Brownlee | Jonathan Burton | Gary J. Crowell, AIA | George J. Haitsch |  James Kilvington 

Patrick Spero, Ph.D | Grace M. Renner | Keith Straw | Paul Steinke | Franklin D. Vagnone | John Van Horne | Peter Woodall

Philadelphia Society for the Preservation of Landmarks

Notice of Election of Members of the Board of Trustees 2022:


Election of Trustees is for a term of three years.    


For a first term ending at the Annual Meeting in 2025:

Robert A. Marshall, Esquire is a retired Assistant Commissioner for Sustainability and Green Energy of the Department of Environmental Protection, wherein he specialized in environmental and energy law and policy. Prior to and between terms of service, he held the position of Deputy Attorney General in Law & Public Safety representing Treasury and Environmental Protection in environmental and contract litigation. As Assistant Commissioner, Marshall coordinated energy matters between the Department and the Board of Public Utilities, which included implementation of the Energy Master Plan for the development of clean and renewable energy. Following Superstorm Sandy, Marshall led a team for major energy resiliency initiatives involving petroleum supply, energy efficiency and distributed generation for critical infrastructure. He retired from state service in 2018.

Bob Marshall has been a resident of Haddonfield since 1986, serving on the Civic Association Board of Governors, the Borough Budget Advisory Committee, President of both The Friends and the Board of Trustees for the Library, President of the Historical Society and Trustee for the First Presbyterian Church. He was honored as Haddonfield’s Citizen of the Year in 2007, is now the co-chair for the Historical Society Archive Center and is currently serving as the Borough Commissioner for Public Works, Parks & Property. 


Robert Powel, Esquire is the Vice President of Legal at Jefferies, a global investment banking firm, headquartered in New York City. Prior to joining Jefferies, Robert Powel was a Senior Associate at Shearman and Sterling, wherein he led all aspects of capital markets transactions from inception to execution with a focus on North and Latin America. In 2014, Robert obtained both his Juris Doctor and LLM in International and Comparative Law from the Duke University School of Law. Mr. Powel is multilingual, speaking both Spanish and French fluently, as well as Portuguese with limited proficiency.


For a second term ending at the Annual Meeting in 2025:


Justin Detwiler is a Senior Project Manager with John Milner Architects, which he joined in 2005. His experience includes architectural design and historic preservation, and he manages both residential and institutional projects. A resident of Philadelphia’s historic Germantown neighborhood, Justin is active within the city’s historic preservation community and serves on the Architectural Committee of the Philadelphia Historical Commission. He has served on the Board of Directors of several non-profit organizations including Hidden City Philadelphia and the Elfreth’s Alley Association. He currently serves as Chair of the Property Committee of PhilaLandmarks, and on the Building and Grounds Committee of the Woodmere Art Museum, where he has been active with campaign to save St. Michael’s Hall.  Justin was selected for England’s prestigious “Royal Collection Studies” program of the Royal Collection Trust, and the “Summer School” of the Attingham Trust for the Study of Historic Houses and Collections. His award-winning architectural designs have been published in Architectural Digest, World of Interiors, Flower Magazine, and numerous magazines and books. As the owner of Three Evergreen Antiques, Justin enjoys collecting and selling American and European antiques and decorative arts. 


Dawn Tancredi, Esq. is a partner at Zarwin and Baum specializing in all areas of real estate development including acquisition and financing, zoning and land use approvals, business and real estate tax issues, construction contracts, leases and related litigation. Dawn also serves as an adjunct professor of Drexel University’s School of Engineering Construction Management Program, is a Zone Member of the House of Delegates in the Pennsylvania Bar Association and serves as Secretary of the Lawyer’s Club of Philadelphia. 



For a third term ending at the Annual Meeting in 2025:

Gregory Cranford, AIA is an architect at HOK, where he is a Senior Principal with a focus on design. For 12 years prior to joining HOK, Greg was a partner at BBG-BBGM. The firms merged in 2013. He has a strong background in adaptive reuse/preservation, urban design and mixed-use projects including hotel/residential and retail. He has led the design of large-scale developments in the U.S. and internationally, including projects in China, India, Malaysia and Korea. His most recent project, The Atlantis Resort in Sanya, China was just awarded the Best New Resort in Asia. Greg holds a Master of Architecture from Rice University. He resides in New York City.


Thomas Hemmerick is a former Trustee from 2008-2014 and a former chairman of the Grumblethorpe committee. Tom is a retired architect and engineer who graduated from RPI and served in the Peace Corps. He has restored two historic properties in Germantown for condominium use. One of these properties, The Blue Mansard, won recognition from The Preservation Alliance. Tom also served as the PhilaLandmarks representative on the Historic Germantown Board. 



For a fourth term ending at the Annual Meeting in 2025:

Lori Cohen is the Director and a Partner at the Arader Galleries in Philadelphia. She has worked in the international fine art market for more than 25 years and is a specialist in 16th through 19th century works on paper, with a focus on natural history, travel and exploration, rare maps, and American paintings. Lori's clients include private collectors, major museums, and libraries around the world. In addition, she advises several corporate collections throughout the United States and Europe. Lori is on the board of the Historical Society of Pennsylvania and Historic Strawberry Mansion. She serves on several vetting committees and panels for museums and international antiques shows. Ms. Cohen has many professional affiliations, including the American Historical Print Collectors Society, the American Historical Association, and the National Museum for Women in the Arts. Her educational background includes a B.A. in Art History from Bennington College in Vermont and foreign study at the Universita Degli Studi di Firenze in Florence, Italy.


Bishop David G. Evans is Pastor of the 27,000 member Bethany Baptist Church in Lindenwold, NY. Author of Healed Without Scars, and CEO of David G. Evans Ministries, he also serves as the Chair of the Board of Trustees of Lincoln University.


Hon. Frank Giordano is President and CEO of Atlantic Trailer Leasing Corp., a transportation and storage equipment company that has been in the Giordano family since 1949. In addition, Frank has served as President and CEO of the Philly Pops since 2011. He has also served as Chairman of Goodwill Industries of Southern New Jersey and Philadelphia.  He has raised $10 million to open the Sir John Templeton Heritage Center, which provides the public with access to the Union League’s substantial archive of significant historic material. Mr. Giordano has received many honors and awards for his work, including the prestigious Order of the Merit of the Italian Republic by the Ambassador of Italy, the Philadelphia Business Hall of Fame Award, the Philadelphia Music Alliance’s inaugural Platinum Award, and a City Council of Philadelphia Citation. Mr. Giordano is Executive Director of the United States Semiquincentennial Commission. He is also the Honorary Consul of Malta for Pennsylvania. He was appointed by the President of the United States to the President’s Advisory Committee on the Arts of the John F. Kennedy Center for the Performing Arts.


Hon. Gregory P. Montanaro is Vice President of Federal Affairs and Senior Advisor for Institutional Advancement at Drexel University, as well as the Honorary Consul of Austria. Greg is also President of Greater Philadelphia Traditions, Inc., a past Chairman of Goodwill Industries of Southern New Jersey and Philadelphia, a Past President of the Union League of Philadelphia, and serves on various non-profit boards in the region, including the Athenaeum of Philadelphia, Philadelphia Museum of Art Corporate Executive Board, Philadelphia Police Foundation, Dad Vail Regatta, and the Committee of Seventy. Greg currently serves as Chairman of the Board of Trustees and as Chair of our Governance/Nominating Committee.

The Nominating Committee, Board of Trustees, and Management Team of the Philadelphia Society for the Preservation of Landmarks support each of the above nominations for service on the Board of Trustees and recommend a vote in favor of each candidate.

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