Cass is an uncommon yet captivating unisex given name of Latin origin, derived from the Roman family name 'Casinius', which means 'hollow'. It is often associated with the Latin word 'cassus', meaning empty or vacant, suggesting a sense of space and potential. Cass gained popularity as a given name in the late 20th century, likely influenced by its use as a nickname for Cassandra or Cassidy.
The name Cass experienced varied popularity throughout the decades, with peaks in the late 1940s and mid-1980s, and consistent presence from the 1960s onwards. Despite fluctuations, it has maintained a steady presence in birth records up until recent years.