Topping the new Forbes list as the wealthiest family in Texas are the Duncans of Houston.
The heirs of oilman Dan Duncan are worth an estimated $25.4 billion.
The descendants of the extraordinary East Texas wildcatter H.L. Hunt have a combined net worth of $15 billion.
The Bass brothers — grandnephews of another 1940s era oilman, Sid Richardson — are worth $9.5 billion.
Elaine Marshall of Dallas and her family own close to 15 percent of privately held Koch Industries.
Forbes values the Marshalls’ holdings at $9.3 billion.
Other Texas families on the list include the Perots at $5.6 billion, the Simmons family at $5.2 billion, the Rogers family (descendants of Mary Kay) at $2 billion, the Westermans (owners of Addison’s J-W Operating) at $1.4 billion, the Colburns (owners of Irving’s Consolidated Electrical Distributors) at $1.3 billion, and the Dedmans at $1.2 billion.