From Old French 'waleis' meaning 'foreigner' or 'from Wales'; famously borne by Wallis Simpson.
Wallis is an English and Scottish surname-turned-given-name meaning, at its medieval root, "the Welshman" or simply "the foreigner" — from the Old French waleis, applied by Anglo-Norman settlers to people from Wales or the Celtic west. It shares its etymological blood with Wallace, Wales itself, and even walnut (literally "the Welsh nut," a Roman-era transplant). As a first name it was used quietly for generations before a single, staggering historical event rewrote its associations entirely.
In 1936, Wallis Simpson — born Bessie Wallis Warfield in Baltimore — became the woman for whom a British king gave up his throne. The abdication of Edward VIII to marry her was the defining scandal of the twentieth-century monarchy, and Wallis herself became a figure of endless fascination: condemned, envied, analyzed, and eventually reassessed. Her name, previously an obscure genteel choice, became charged with all the voltage of that story — ambition, glamour, and the question of what a woman is permitted to want.
For contemporary parents, Wallis offers something genuinely layered. The surname structure and the -is ending give it a gender-fluid modernity, while the historical weight means it never feels invented. It appeared in the orbit of names like Hollis, Ellis, and Alexis but retains its own particular edge — part Old World geography, part twentieth-century drama, entirely its own.