Kosaburō

Kosaburō is a traditional Japanese male given name. The name is formed from kanji characters, and its meaning is derived from the combination of these characters. 'Ko' (小) means 'small', 'sa' (三) means 'three' or 'third', and 'burō' (郎) is a common suffix for male names, often meaning 'son' or 'man'. This naming convention was historically used to denote birth order within a family, particularly for sons.

The use of 'burō' suffixes (like Ichirō for first son, Jirō for second, Saburō for third, Shirō for fourth, Gorō for fifth, etc.) was very common in Japan for centuries. Kosaburō specifically indicates a 'small third son,' perhaps to distinguish him from an older brother who might also be a 'third son' in a broader sense, or simply as an affectionate diminutive. While less common in modern Japan due to changing naming trends, names with these traditional suffixes still carry a sense of heritage and classic Japanese identity.