Tessa

Tessa is generally considered a short form of Theresa, an English and Dutch given name whose ultimate origin is uncertain, though it may derive from the Greek place name Therasia or possibly from the Greek word meaning to harvest. The name gained wider use in the English-speaking world during the 19th century, partly through literary and cultural exposure, and has since established itself as an independent given name in its own right. Theresa, Teresa, and Tess are closely related forms found across multiple European languages.