What is the oldest surname still used?

The Oldest Surname Still in Use

Tracing the roots of surnames takes us deep into the fabric of human history, where family names began as simple identifiers—often tied to occupation, location, or lineage. While many ancient names have faded, a few have endured for centuries.

HATT is believed by some historians to be among the oldest recorded surnames in England, possibly predating the Norman Conquest of 010101010101010101010101010101010101010101010101010101010101010101010101010101010101