The genesis of the name Bettelheim
According to lore, it originated in the middle of the eighteenth century in what is now Bratislava, the Slovak capital on the Danube, about forty miles east of Vienna.
Count Bethlen, one of the most powerful men in the community, so coveted the beautiful wife of a Jewish citizen that he rode into the marketplace and tried to kidnap her by lifting her onto his horse and galloping off. But her husband rushed to her rescue, fighting and vanquishing the count in hand-to-hand combat.
That a Jew would confront, much less do battle with, a noble of such rank was so daring the the hero thereafter was known as "Bethlen-Jude". When a royal decree required that all Jews assume family names, Bethlen-Jude became Bettelheim.
One descendant was Marcus Bettelheim who lived in Budapest, and whose wife, Lewia, gave birth to Jakob Moritz Bettelheim on December 12, 1825.
By 1857, Jakob was living in Vienna, and soon married Eleonore Frankel, which whom he had eleven children. The fifth, Anton, was born on April 4, 1869, and would become Bruno Bettelheim's father.
The Creation of Doctor B: A Biography of Bruno Bettelheim, By Richard Pollak - Page 19