Brailo is a Slavic name that is embedded in the name of the city of Brailovo, which was recorded in 1408 and 1443 in the Moldavian Principality, particularly in the city of Suceava. This name can also be associated with the Romanian port city of Brăila on the Black Sea. The basis of the Ukrainian personal name Brailo is the South Slavic name Braiilo, which, according to its original semantics, was associated with the Ukrainian colloquial word "bratczo" (little brother). This name appears in the surnames of Cossacks, for instance, Brailo—a Cossack of the
Bratslav regiment in 1649, as well as in the surnames of such Cossacks as Yukhno Brailo from the Korsun regiment, Fedor Brailenko from the
Bila Tserkva regiment, Prokop Brailenko from the
Bratslav regiment, and Vasko Brailovsky from the
Bratslav regiment.