Etymology and MeaningShiro is a Japanese masculine given name, primarily an alternate transcription of the kanji 四郎, which is typically romanized as Shirō or Shirou. The name is composed of two elements: the kanji 四 (shi) meaning “four,” and 郎 (rō) meaning “son.” Traditionally, Shirō was a name given to the fourth son in a family, following the naming convention for sons’ birth order. Other kanji combinations are possible, broadening the name’s potential meanings depending on the chosen characters.Historical and Cultural ContextThe practice of naming sons by birth order (e.g., Ichirō for first son, Jirō for second, Saburō for third, and Shirō for fourth) has deep roots in Japanese culture, dating back to the samurai era and earlier. While modern naming often deviates from this strict pattern, these traditional names remain common as they carry a sense of heritage and order. The name Shiro (as a romanized form) is found not only in Japan but also among the Japanese diaspora and in countries like the Philippines, where it is used as a result of cultural exchange via Filipino Japanese or popular media.Notable BearersWhile there are no widely documented notable bearers under this exact spelling, the related form Shirō boasts several historical figures, including Shirō Ishii, the commander of Unit 731 during World War II, and modern figures like soccer player Shiro Kano. The versatility of kanji means that the name may appear with different meanings across individuals. Additional notes from Tagalog contexts indicate the name is borrowed through Hepburn romaji and used in the Philippines as a given name.Meaning: Fourth sonOrigin: Japanese, from kanji 四 (four) and 郎 (son)Type: Masculine given nameUsage Regions: Japan, Philippines (via borrowing), global Japanese diaspora