Tosell is a Catalan surname, representing a regional adaptation of the Italian surname Tosi. It is most prevalent in the Catalan-speaking regions of Spain and has a history tied to the cultural exchanges between Italy and the Iberian Peninsula. The name's etymological root is derived from the Italian word tonsus, a Latin term meaning “shaved” or “clean-shaven,” which originally served as a nickname denoting a younger man who did not yet have a beard, common among Romani and medieval naming traditions. Over time, this descriptive nickname evolved into a hereditary surname in Italy, and its migration to Catalonia likely occurred through trade, migration, or the influence of Italian communities in Mediterranean coastal areas. Etymology The core word tonsus comes from the Latin verb tondēre (to shear or shave), which in turn gave rise to various Romansh and Italian forms. The suffix modernization from Tosi to Tosell reflects typical Catalan phonetic changes, such as the Catalan tendency to end masculine surnames with -ell (diminuative earlier as well). The counterpart variant Toset is also found, closely related through secondary transcription. Thus both Tosi and Tosell–derivatives belong to a family of surnames that physically describe a man's absence of facial hair in past generations, serving function as earlier