The name "Myl" has ancient Slavic origins. It emerged as a shortening of certain two-root names such as Myloněg or Dobromyl, where the root morpheme "Myl(o)-" expresses the idea of "dear, beloved." The name may also have arisen from the substantivization of the adjective "myl." The first written mention of the personal name "Myl," referring to a Ukrainian, dates back to 1221 and comes from the comitat of Siady in Zatissia. The second mention appears in 1226 with records of the anthroponyms Visan, Vyrsintet Mil. Various records of the name "Myl" also appear in 1565, with individuals bearing the surnames Mil Proskurnicz and Hawriło MU. At that time, the name "Myl" was also used in Belarus and the Czech Republic. Notably, one can find records such as Mil Radziew in Belarus. Between the 15th and 17th centuries, there were more frequent instances of patronymics formed from the anthroponym "Myl," such as the patronymic Milowicz in 1565, the Cossack Milenko in 1649, and Andreeyets Milovchich in 1565.