Jiraiyah is likely a modern form influenced by Jireh and Jeremiah, with possible pop-culture influence from Jiraiya.
Jiraiyah is an elaborated feminine or modernized variant of Jiraiya, a name embedded deep in Japanese folklore and literary tradition. The original Jiraiya (自来也) is a legendary ninja hero whose name is variously interpreted as "coming of one's own accord" or "the one who arrives freely," suggesting an untethered, self-determining spirit. The character first appeared in the Edo-period serial novel Jiraiya Goketsu Monogatari ("The Tale of the Gallant Jiraiya"), published in installments from 1839 onward, in which a shape-shifting ninja commands giant toads and battles evil across a mythologized Japan.
The name and its hero were absorbed into Meiji-era woodblock prints, kabuki theater, and eventually twentieth-century manga and film, but their global reach exploded with Masashi Kishimoto's Naruto series, which ran from 1999 to 2014. In Naruto, Jiraiya is a Legendary Sannin — a roguish, wise, and ultimately tragic mentor figure whose death became one of the most emotionally affecting moments in the series. Kishimoto named the character in direct homage to the Edo tradition, and millions of readers worldwide encountered the name through that lineage.
The -yah suffix in Jiraiyah gives the name a slightly different register, evoking Hebrew theophoric endings (as in Isaiah, Jeremiah) or simply a softer, more lyrical close to a name that otherwise carries considerable martial energy. It has emerged as a creative choice among parents who love the folkloric and pop-cultural weight of Jiraiya but want something that feels less borrowed and more invented — a name at the intersection of Japanese legend and global fan culture.