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Our Founding Families

Founders and CEO

David B. Miller

David B. Miller is Co-Founder and Managing Partner of EnCap Investments, L.P., a leading provider of private equity to the energy industry. EnCap has raised 22 funds and managed over $37 billion of institutional capital since its inception in 1988, and today ranks as one of the twenty largest private equity firms in the world.

David is a graduate of Southern Methodist University, having received Bachelors and Masters Degrees in Business Administration in 1972 and 1973, respectively. He has been a member of the Board of Trustees at Southern Methodist University since 2008, currently serving as Chairman, and also serves as Chairman of the Executive Board of the Edwin L. Cox School of Business. David is a recipient of Distinguished Alumnus Awards from both Southern Methodist University and the Cox School. In 2009, he was honored with the Silver Anniversary Mustang Award by the SMU Lettermen’s Association.

In 2004, David was appointed to the National Petroleum Council, an advisory body to the Secretary of Energy, and he is a member of the Board of Advisors of the Maguire Energy Institute. David was inducted into the Rocky Mountain Oil & Gas Hall of Fame and the Dallas Business Hall of Fame in 2014 and 2015, respectively.

David and the Miller Family Foundation support numerous charities. He serves on the Board of Directors of the George W. Bush Foundation, Goodwill Industries of Dallas, the DFW Salvation Army, Methodist Health System Foundation, the UT Southwestern Medical Foundation, and the National Association of Basketball Coaches Foundation. He is former Board Chair and an Honorary Lifetime Director of the Senior Source of Greater Dallas. The Senior Source recognized David and his wife, Carolyn, with the Spirit of Generations Award in 2011. David was honored with the Volunteer Center’s Lifetime Achievement Award in 2013, and he received the L. Frank Pitts Energy Leadership Award from the Maguire Energy Institute in 2014. In 2017, David was honored by the Methodist Health System Foundation with the Robert S. Folsom Leadership Award.

Kyle D. Miller

Kyle D. Miller is the Founder and Chief Executive Officer of Silver Hill Energy Partners and its affiliated partnerships. He founded the Silver Hill enterprise in 2011 and throughout the last decade has led Silver Hill through the successful acquisition, development and disposition of multiple large-scale oil and gas projects and related investments. Through their current partnership, Silver Hill manages over $1 billion in institutional capital focused on direct investments in upstream oil and gas assets and related midstream infrastructure.

In addition to his role at Silver Hill, Kyle is a founding investor in a number of private ventures, with a primary focus on oil and gas and real estate.

​Prior to Silver Hill, Kyle was a Principal and Senior Vice President of Energy Trust Partners in Dallas, where he led the firm’s business development efforts and assisted in the management and oversight of the firm’s upstream private equity funds. Before Energy Trust, Kyle was a Vice President at Energy Spectrum Advisors in Dallas, and he began his career with Wells Fargo Bank and Wells Fargo Energy Advisors in Houston, Texas.

​Kyle earned his Bachelor of Business Administration degree in Finance from Southern Methodist University, where he was named Outstanding Young Alumni from the Edwin L. Cox School of Business in 2015. Kyle currently serves as the Vice Chairman of the Cox School Executive Board and is also a member of the Board of Directors of the Maguire Energy Institute.

Kyle and the Miller Family are actively involved in supporting philanthropies through the Katy and Kyle Miller Family Foundation. Kyle currently serves as the Chairman of the Board of the Goodwill Industries Dallas Inc., is a member of the Chairman’s Advisory Counsel for Children’s Medical Center Foundation and a member of the Board of Directors of Texas 2036.

Meredith M. Bebee

The Bebee Family

Meredith Miller Bebee was born in Denver, Colorado, but raised in Dallas. After graduating from Highland Park High School, she attended Vanderbilt University, earning a Bachelor of Science degree with honors. Meredith is married to Kyle Bebee, who is the Founder and Managing Director of Spicewood Partners, a private energy and investment fund. Meredith and Kyle are the proud parents of four children.

Meredith serves on the Salvation Army of North Texas Board, the SMU Simmons School of Education Executive Board, the Teach for America DFW Regional Advisory Board, and the Klife Ministries board, and is a member of Crystal Charity Ball and the Development Committee of Providence Christian School. The Bebees have recently chaired the Act Fall Benefit and the Buckner Ministries Shining Hope Dallas Capital Campaign. She also serves as Vice President of the David B. Miller Family Foundation, and actively volunteers with her childrens’ schools and local volunteer organizations.

Alan L. Miller

Alan serves as Chief Executive Officer and Managing Partner with Turtle Creek Wealth Advisors. Prior to joining Turtle Creek, Alan spent 34 years in the wealth management and corporate banking space. Most recently, Alan founded and built Private Wealth Advisors, the registered investment advisEr subsidiary of Texas Capital Bank, where he helped build the business from the ground up, building the platform and service offering, recruiting advisory teams across five Texas markets, and ultimately becoming one of the fastest growing bank-owned RIAs in the United States.

Alan previously held senior leadership roles for BOK Financial as National Banking Executive for the Private Banking operation across seven states and head of Private Wealth for Texas and JP Morgan where he ran the bank’s Dallas Private Client operation. Prior to that, Alan operated in various leadership and production capacities in corporate banking and corporate finance with JP Morgan and Bank of America.

Alan earned a Bachelor of Business Administration from The University of Texas at Austin and a Master of Business Administration from Southern Methodist University. Alan currently serves as the Chairman of the Board of Trustees of the King’s Academy, a private Christian school dedicated to serve children in South Dallas as well as a member of the Board of Trustees of the Association of Christian Schools International, a global organization serving over 2,000 member schools worldwide.  Alan has previously served on the boards of Junior Achievement of Dallas, The SMU Athletic Forum, Dallas Summer Musicals, Dallas Theater Center, Ronald McDonald House, and Prestonwood Christian Academy. Alan and his wife Meg have been married for 36 years and they have three adult children, Hayley, Lindsey and Jeremy.

Dian Graves Owens Stai

Dian Graves Owen Stai is the Chairman of Mansefeldt Investment Corporation and the Dian Graves Owen Foundation. Among other interests, Mansefeldt owns one of the largest privately owned mineral holdings in the Permian Basin.

Dian was the co-founder and Chairman of the Board of Owen Healthcare, a pharmacy management company that helped make pharmacies a critical part of the patient care team. Owen was ultimately sold to Cardinal Healthcare in 1997. Dian then created Mansefeldt Investment Corporation and the Dian Graves Owen Foundation.

Dian was educated at Texas Tech and McMurry University. She is a member of the Texas Business Hall of Fame and Texas Women’s Hall of Fame. She was recognized numerous times as one of the Top 25 businesswoman in America by various magazines. Dian was a member of the board of the initial Texas Department of Commerce.

She now resides in Fredericksburg, Texas with her husband, Harlan Stai where she continues her long history of generosity and philanthropy focusing on historical preservation, health and social services, education, faith, the arts and animal welfare. The foundation, headquartered in Abilene, has been integral in projects there as well as in Fredericksburg. Gratitude drives her desire to share what she has. She believes sharing blessings and forging relationships is her calling.

Tucker S. Bridwell

Tucker S. Bridwell is President of Mansefeldt Investments and the Dian Graves Owen Foundation in Abilene, Texas. Additionally, he manages MDJ Minerals, one of the largest private mineral holdings in the Permian Basin. Previously, he was on the boards of Concho Resources, Inc. and First Financial Bankshares and served as lead director of both companies. He has been instrumental in Abilene’s economic development efforts and active in local and state politics. He has received the Outstanding Citizen of the Year in Abilene, the Distinguished Citizen Award by the Boy Scouts of America and an Honorary Doctorate from McMurry University.

Tucker received B.B.A. and M.B.A. degrees from SMU’s Cox School of Business. He is also a member of SMU’s Board of Trustees, and chairman of the Cox Executive Board. Tucker received the Cox School Distinguished Alumnus Award in 2006 and the SMU Distinguished Alumni Award in 2018. In 2019, Tucker and his wife, Gina, established the Bridwell Institute for Economic Freedom at the Cox Business School.

Watt R. Matthews

Watt R. Matthews is a Vice President of Investments at the Matthews Family Office.  Previously, Watt worked in various roles from Analyst to Managing Director at Main Street Capital Corporation, a Houston-based investment firm. At Main Street, Watt managed a portfolio of credit-related assets across a diverse set of industries, with a focus on the energy, industrial, and financial sectors. His responsibilities included sourcing and underwriting private middle market loans and equity investments, opportunistic investments in liquid leveraged loans and high yield bonds, and distressed workouts and restructurings. He also managed a portfolio of LP commitments to external private equity and credit managers.

Watt graduated with a Bachelor of Business Administration from the McCombs School of Business at the University of Texas at Austin and graduated from the TCU Ranch Management Program.

Watt serves on the board of the Kickapoo Springs Foundation, the Texas Agricultural Land Trust, and the investment committee of the San Antonio Academy endowment. Watt previously served on the board of First Financial Trust and Asset Management.

The Matthews Family has a deep history in Texas, dating back to the 1850s, as pioneer ranchers and energy investors.

Hear From Our Founders

Turtle Creek Wealth Advisors is history coming together. As friends and investment partners for over 30 years, our families are aligned on what matters most in business: Integrity. It’s embedded in everything we do.

We love building companies and investing in people. Our goal is for Turtle Creek to be the premier private wealth firm in Texas. We know finding a place to invest your money is one thing – but finding people to build the legacy you intend is entirely different. Philanthropy. Education. Growth. It’s unique to all of us. Managing wealth goes beyond a portfolio and starts with relationships.

We believe culture drives results. If you surround yourself with this team for even ten minutes – it’s crystal clear – these folks really love each other. They have a sense of teamwork and mutual respect that is second to none.

We each bring our own history to this company and look forward to seeing what the Turtle Creek team builds for the future. You’ve got to have it all – integrity, respect, and experience.

The Turtle Creek Founders