Likely a variant or misspelling of Tyler, originally an occupational name for a tile maker.
Tlyer is likely a variant or misspelling of Tyler, originally an occupational name for a tile maker. That root gives it the sturdy practicality of many medieval English surnames, even though the modern spelling shifts it toward something more individualized.
The altered form makes the name feel less standard and more stylized, but the underlying occupational history still gives it weight. Tlyer sounds contemporary and a little unconventional, while Tyler's older meaning keeps it grounded in work and craft. It is a name where a familiar lineage has been visibly rearranged.