A Spanish-form variant of Jairo, from Hebrew Jair, meaning “he shines” or “he enlightens.”
Jayro is a Spanish-influenced spelling of Jairo, itself the Spanish rendering of the Hebrew name יָאִיר (Yair), meaning "he who shines" or "he who enlightens." In the Hebrew Bible, Jair the Gileadite served as a judge of Israel for twenty-two years, and another Jair is listed among the sons of Manasseh, making the name one of quiet but genuine scriptural antiquity. The name's most dramatic New Testament moment belongs to Jairus, the synagogue official whose twelve-year-old daughter Jesus raises from the dead in the Gospels of Mark and Luke — a story so emotionally specific (the father's public desperation, the private resurrection, the instruction to give the child something to eat) that Jairus became one of the more memorable named figures in the entire New Testament narrative.
As the name traveled through the Iberian Peninsula and into Latin America via the Spanish colonial tradition, it took on the warm, open vowel sounds characteristic of Spanish phonetics. In Brazil it became Jairo, carried memorably by the beloved Brazilian singer Jairo Barbosa, known professionally simply as Jairo, whose romantic balladry made the name feel soulful and musical throughout the mid-twentieth century. Across Colombia, Venezuela, Mexico, and Central America, Jairo remained in steady use throughout the twentieth century — familiar but never overcrowded.
The spelling Jayro, using the English-influenced J-a-y opening, appeared primarily in communities navigating between Spanish and English naming conventions, preserving the sound while reshaping the orthography toward a bilingual eye. It lands pleasingly in both languages — a name of ancient light wearing a modern coat.