Passion. Experience. Diligence.

About Us

About Us

Sellmark will build a team of professionals for your project or company, to meet your unique needs and budget. We will put together a team of specialists who work together to provide clients a complete package of services. Professionals offer expertise in these areas:

  • Fundraising

  • Grant writing

  • Media writing

  • Advertising

  • Graphic design

  • Research

  • Public relations

  • Special events coordination



Get in touch

We at SellMark know that finding the right consultant is crucial to the success of your business or non-profit. That’s why we offer free consultations to walk you through your needs, the scope of your goals, and your budget.

Reach us at:



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Founding Partner

Dianne Powell

Dianne Garrett Powell has more than twenty years in marketing, development, sales, and management positions in both non-profit and for-profit businesses. As President of Sellmark, Dianne Powell believes there are similarities in marketing non-profits and commercial ventures. Donors are like customers; they must be identified, cultivated and continually provided with good service if a non-profit is to be economically viable..



University of Texas at Austin
BS in Education

Graduate Studies in Marketing


Activities & Affiliations

Dianne has consulted with over 40 businesses and non-profits during her career. She has also served in leadership positions in over 40 non-profit organizations.




managing Partner

Lydia Duncombe

Lydia has been with Sellmark for three years. She works directly with clients on managing each aspect of the goals they hope to accomplish working with Sellmark. Some of her duties have included coordinating a 20,000+ festival, creating & developing advertising plans, managing & creating original content for social media platforms, execute public relation plans, maintain websites, facilitate the creation of business & marketing plans, secure community partnerships, design collateral materials and much more.



B.A., Communications, 2014