After the war, Williams became active in politics, becoming the Mayor of Patterson, as well as serving as the president of police jury[clarification needed] in St. Mary Parish and state highway commissioner.

The couple were important socialites in Louisiana where Helen presided as acting Tsaritsa of the Mystic Court at the Duke of Alexis Tableau Ball in New Orleans, 1924.

In 1927, spurred by the news of the Lindbergh solo flight across the Atlantic, he had purchased a similar Ryan monoplane from Jimmy Wedell, a noted race pilot.

[6] On May 19, 1936, as Williams was returning from Baton Rouge where he had a conference with Governor Richard Leche, and flying with the company's chief pilot, John Worthen, their Beechcraft Model 17 Staggerwing crashed on takeoff, killing both men instantly.

The new owner, Captain Eddie Rickenbacker, folded in the Wedell-Williams Air Service Corporation into the larger airline operation, gaining the coveted mail route from New Orleans to Houston, giving Eastern its first presence in Texas.