Meet The Team
Corbin Robertson Jr. - Chairman
Mr. Robertson is currently a Managing Partner of Quintana Capital Group, an energy focused private equity firm he co-founded with ~$1 billion AUM at its peak. He is also the Chairman and CEO of the general partner of Natural Resource Partners L.P. (NYSE: NRP) and Chairman of Quintana Energy Services, Inc. (NYSE:QES). He was the Chairman of Quintana Maritime Limited prior to the sale of its 37 vessels to Excel Maritime Carriers Ltd. in 2008 and Chairman and CEO of Quintana Shipping, a 2nd dry bulk shipping venture with 14 vessels sold to Golden Ocean in 2017. Mr. Robertson has served as the CEO and Chairman of the general partner of Western Pocahontas Properties since 1986, of Great Northern Properties since 1992 and as Chairman of the Board of Directors of New Gauley Coal since 1986.
In addition to being a current member of their boards, he serves or has served as Chairman of the Board of the All-American Wildcatters Association, the Baylor College of Medicine, the Cullen Trust for Higher Education and the World Health and Golf Association. He is also on the boards of the American Petroleum Institute, the National Petroleum Council and the Texas Medical Center, and a member of the Texas Business Hall of Fame. He attended The University of Texas at Austin, where he earned a B.B.A. from the Business Honors Program.
Susan Combs (Chairperson) is a successful, experienced executive at both the state and federal level. She has 16 years of statewide leadership in Texas, providing strategic and innovative management, as well as nearly three years at the U.S. Department of the Interior in executive management. At Interior, Combs was the Assistant Secretary for Policy, Management and Budget, and Chief Financial Officer.
Most recently Combs served as the Chair of the Women’s Suffrage Centennial Commission, which was created by Congress, to celebrate the19th Amendment centennial nationally in August 2020. Combs is presently a Fellow at the University of Texas Center for Identity where she is working to assist on matters relating to personal data privacy.
In Texas Combs served in elected positions between 1993 and 2015. Combs served as the state’s Comptroller from 2007 to 2015. Combs was the first woman Agriculture commissioner and served from 1998 to 2007. Combs was a state legislator from 1993 to 1996 with a proven record of writing and passing landmark legislation. As head of two state agencies, she streamlined operations, ensuring more efficient and cost-effective programs, and received national recognition. Her articles have appeared in the Wall Street Journal, The Hill, the Austin American-Statesman, the San Antonio Express-News, the Houston Chronicle among others. Combs also launched a woman’s empowerment organization in 2015 and has long had an interest in promoting women to leadership roles.
Combs is the manager and owner of a more than 130-year-old family ranching and hunting and grazing management operation in West Texas for more than 40 years
John Colyandro most recently served as Senior Advisor and Policy Director for Governor Greg Abbott, who also appointed him to represent the State of Texas on the Education Commission of the States, and the Transition Legislative Oversight Committee for the Health and Human Services Commission.
Prior to joining the Office of the Governor, John served for over a decade as Executive Director of the Texas Conservative Coalition Research Institute, a state-based think-tank that develops public policy recommendations. He also served as Executive Director of the Texas Conservative Coalition, a caucus of members of the Texas House and Senate.
John served previously as a campaign policy advisor to Greg Abbott for Attorney General of Texas and then as a gubernatorial candidate and has had an active role in numerous campaigns throughout the United States including Texas Senator Phil Gramm’s presidential campaign.
John founded Wittman Public Affairs in 2021 and was named the #3 “Rising Star” on Capitol Inside’s 2021 list of Texas Lobby Power Rankings. John has worked in Texas Government and politics for nearly a decade, and prior to founding Wittman Public Affairs, John was the Communications Director for Governor Greg Abbott.
Prior to John’s time in Texas, he worked for the House Republican Conference on Capitol Hill and served on Mitt Romney’s 2012 Presidential campaign. John is a proud graduate of Miami University in Oxford, Ohio.
David Weeks currently serves as media consultant to numerous office holders, campaigns and PAC’s. Former clients include former Governor Rick Perry, Nevada Governor Brian Sandoval, former United States Senator Dean Heller, The National Republican Senatorial Committee and the Republican Governor’s Association among others.
A former gubernatorial press aide and speechwriter, David is a member of the American Association of Political Consultants, where he has often won the organization’s annual Pollie Awards, the most prestigious in the political campaign and public affairs profession. He is currently on the Board of Directors for the Texas Department of Public Safety Foundation and the Board of Advisors for the College of Communications. A sixth-generation Texan, David served on the Texas Quarter Dollar Coin Advisory Committee as an appointee of then-Governor George W. Bush.
David graduated from The University of Texas at Austin and was named Alumnus of the Year by the University’s College of Communication in 2008.
Ryan Gravatt is a digital strategist who specializes in using Websites, social media, advertising, email and search engines to bolster public affairs and public relations campaigns. Ryan is recognized as an expert in developing digital strategies for crisis communications and grassroots mobilization planning.
Ryan draws upon his experience with mass communications in public affairs and as a newspaper reporter to integrate the client’s online presence into their broader communication plan. He develops and maintains digital strategies for corporations, political campaigns, issue-advocacy organizations and membership associations.
Ryan graduated from the University of Florida in 1999 with a B.A. in History and a B.S. in Journalism. In 2020, the University of Florida recognized Ryan as one of the university’s top 100 entrepreneurs.
Kate Decker serves as Policy Research Specialist for Colyandro Public Affairs and brings her wealth of experience in both the public and private sectors.
Kate began her career as a litigator in Dallas, Texas specializing in commercial litigation and professional liability. She moved to public service in June 2008, serving as Legal Counsel for then-Senator Dan Patrick. Kate honed her research skills while working in Senator Patrick’s office, advising on issues related to finance, criminal justice, and election law.
Following her time in the Texas Legislature, Kate served as Legal Counsel to Barry Smitherman during his tenure as Chairman of the Railroad Commission of Texas. She then returned to the private sector, practicing law in the oil and gas industry.