No documented founder or formal establishment record has been identified. The observance circulates through online holiday calendars as part of a broader trend of name-day celebrations.
From Cathedral to Classroom
After Crusaders carried Catherine's legend back to Western Europe in the 12th century, the name became standard across England, France, and the Iberian Peninsula. In the 16th century, English writers began inserting an "h" into the spelling, linking it explicitly to katharos as a folk etymology that reinforced the association with purity.
By the 20th century, the longer forms Katherine, Catherine, and Kathleen had generated a family of nicknames. Kathy emerged as the dominant informal version, and American parents began registering it as a standalone legal name in rising numbers after World War II. In 1950, Kathy ranked 38th on the Social Security Administration's list of newborn girls' names.



