Spelling according to Wilbert Garvin (➺ »Another bagpipe of the 17th century« in An Píobaire), whereas Scaldaferri refers to it as follows: "Given the current state of knowledge, it is not possible to hypothesise a direct relationship with the ancient Italian sordellina (or surdelina), which was widespread in the Neapolitan musical environment between the 15th and 16th centuries, which according to iconographic sources had two stopped chanters, was equipped with many keys, and had numerous drones" (NB¹: ➺ Sordellina; Compare Sordellina (synonym of Sourdeline) [➺ sources: Scarabelli]); NB²: ➺ homonyms & similar terms, Sardellina & Sardëllina, Serdellina, Sordelina &c., and Sourdeline and related terms.