Treyson is an English-style modern patronymic meaning "son of Trey" in form.
Treyson is a contemporary American creation, blending two well-established naming traditions: the nickname Trey, derived from the Old French and Latin *tres* meaning "three" (historically given to a third son or the third bearer of a family name), and the popular surname-style suffix *-son*, meaning "son of." The result is a name that feels both familiar and freshly minted, sitting comfortably within the landscape of modern invented names that emphasize strong consonants and energetic sounds.
Related constructions like Greyson and Tayson have followed similar phonetic logic. The name has no ancient lineage or literary precedent to draw from, and that is precisely part of its appeal to some parents — it arrives unburdened by historical associations, allowing a child to define it entirely on their own terms. Treyson gained traction in the United States in the 2000s and 2010s, particularly in communities where creative respellings and phonetic constructions are celebrated as a form of individuality.
The "ey" spelling rather than "ai" or "a" signals a specific aesthetic sensibility within contemporary American naming culture, one that prizes visual distinction. It is almost exclusively a masculine given name, projecting confidence through its crisp, punchy sound.