In the 1800s, Samuel Augustus Maverick went to Texas and became known for not branding his cattle. He was more interested in keeping track of the land he owned than the livestock on it, Ms. Maverick said; unbranded cattle, then, were called “Maverick’s.” The name came to mean anyone who didn’t bear another’s brand.

Image BRAND Samuel Augustus Maverick

Sam Maverick’s grandson, Fontaine Maury Maverick, was a two-term congressman and a mayor of San Antonio who lost his mayoral re-election bid when conservatives labeled him a Communist. He served in the Roosevelt administration on the Smaller War Plants Corporation and is best known for another coinage. He came up with the term “gobbledygook” in frustration at the convoluted language of bureaucrats.

This Maverick’s son, Maury Jr., was a firebrand civil libertarian and lawyer who defended draft resisters, atheists and others scorned by society. He served in the Texas Legislature during the McCarthy era and wrote fiery columns for The San Antonio Express-News. His final column, published on Feb. 2, 2003, just after he died at 82, was an attack on the coming war in Iraq.

Terrellita Maverick, sister of Maury Jr., is a member emeritus of the board of the San Antonio chapter of the American Civil Liberties Union of Texas.

Considering the family’s long history of association with liberalism and progressive ideals, it should come as no surprise that Ms. Maverick insists that John McCain, who has voted so often with his party, “is in no way a maverick, in uppercase or lowercase.”