Tresia is a unique Spanish feminine given name derived from 'tres', meaning three in English. Its meaning, 'three' or 'triple', is often interpreted as symbolic of harmony and balance. Despite its unusual numerical origin, Tresia has been used historically by notable figures like Tresia de la Cerda, a 15th-century Spanish noblewoman known for her beauty and intelligence. Today, it remains an uncommon yet captivating choice.