Lydia Hennessey is a Director at Trident DMG, where she provides strategic media counsel, communications planning, and support to clients across numerous industries. She also assists clients with long-term corporate positioning, executive thought leadership, and crisis counsel.

Before joining Trident, Lydia was a Managing Supervisor at FleishmanHillard, where she led global public affairs initiatives for a prominent technology client and managed proactive media engagements related to the company’s AI, networking, and security solutions. She also led the PR agency’s support of a major beverage brand’s corporate social responsibility arm. Her thoughtful approach to storytelling and ability to navigate the evolving media landscape has consistently delivered measurable coverage results for her clients.  

Lydia began her communications career at Edelman, where she supported critical corporate affairs projects, including crisis response for a commercial aircraft manufacturer and strategic counsel for a large theme park entertainment company facing consumer and stakeholder activism issues.

Lydia graduated from Georgetown University with a B.A. in Government and a B.A. in Theology from the College of Arts & Sciences. There, she earned Dean’s List and Second Honors distinctions in her coursework and completed advanced study abroad programs in Rome, Italy and Bath, England.

Lydia is originally from New York City and now resides in Washington, D.C. She is actively engaged in the greater Washington community as a resident with the Junior League of Washington, a non-profit women’s volunteer organization. She serves on the JLW Leadership Institute committee, which facilitates member development trainings and literacy-based events in the community.