Leadership with Knowledge, Tradition, and Integrity

John Canning

Leadership John CanningJohn is an honorary member of the American Institute of Architects (AIA) – the only decorative painter in North America to be designated with this distinguished honor. He is also an honorary member of the prestigious American Institute for Conservation of Historic and Artistic Works (AIC). John is the leading authority in the United States on traditional decorative painting materials and techniques, as well as historical color palettes. He studied in Glasgow, Scotland where he attended the Glasgow School of Art and the Decorative Trades Institute. He earned the prestigious London City & Guilds certificate and served his apprenticeship as a church decorator in Europe. His extensive knowledge of decorative painting and period interiors and a career with many landmark restoration projects have earned him many national awards.


Over the years, John has been sought after by architects and preservationists to consult on historic and period interiors with complex finish systems such as encaustic and distemper paints, simulated inlaid wood-grain, marbling, trompe l’oeil, architectural grisaille, and freehand artwork. His vast knowledge of old world finishes and traditional materials has enabled him to guide many clients’ challenging restoration projects. John continues to share his knowledge of the decorative arts with clients and professionals through guest lecturing at graduate preservation programs and leading decorative finish workshops.

Email: john@johncanningco.com

David Riccio

Leadership David RiccioDavid is a Professional Associate of the American Institute for Conservation of Historic and Artistic Works (AIC)

The leading authority in traditional and ornamental plaster, David currently serves on the board of the Northeast chapter of the Association for Preservation Technology (APT). David has been an integral part of John Canning & Company for over 20 years, and has become a visionary leader for the entire Canning team. It was this vision that led to the building of Canning’s on-site historic preservation studio, as well as general expansion of the company deeper into the world of historic preservation.


David’s mission is to uphold the respect for historic integrity and level of skill and expertise that John Canning has championed since the beginning of his career. David served an extensive, multi-year, certified apprenticeship for decorative painting and plaster and has since become an expert in both categories. He has an impressive business management resume and has efficiently and effectively overseen large-scale projects such as the Virginia State Capitol, the Pennsylvania State Capitol, Radio City Music Hall, and the War Memorial Opera in San Francisco. Many of the projects that he has been involved in have received national awards. In recent years, David has led the team in the development and expansion of our plastering studio.

Email: david@johncanningco.com

Dorothea Canning-Hennessey

Leadership Dorothea Hennessey

 As one of the first employees hired by the John Canning & Company, Dorothea has been instrumental in transforming it from a small regional shop into a national decorative arts studio. In addition to making sure everything runs smoothly in the company’s day-to-day operations, Dorothea oversees and manages Canning’s safety programs and protocols. Her education in construction management has been beneficial to the company, as she has automated our information technology systems so that John Canning & Company has the most up-to-date technology. She also manages the studio’s finance department. She works directly with clients and vendors to address their specific needs and requirements, often going above and beyond to offer the highest level of service possible.


Because of her experience on large-scale projects, as well as with various state and federal agencies throughout the country, Dorothea has a comprehensive understanding of regulations and reporting requirements, and serves as a resident expert in those areas.

Email: dorothea@johncanningco.com

Marcie Clifford

Leadership Marcie CliffordMarcie graduated from the Pennsylvania State University, majoring in Integrative Design with a focus on graphic design in Architectural Studies, and Art History. Since coming to John Canning & Co., she has worked onsite both with decorative painting technique and as a project manager. She now works in the central management and coordination of all phases of preservation work, from concept through installation

Email: marcie@johncanningco.com