Either a variant of Italian Giovanni (meaning 'God is gracious') or referencing Gion, the famous historic district of Kyoto.
Gion lives two distinct lives on opposite ends of the Eurasian continent. In the Romansh language of the Swiss canton of Graubünden — one of Europe's most linguistically isolated regions, where Latin evolved in virtual isolation from medieval French and Italian influences — Gion is the traditional form of John, itself derived from the Hebrew Yohanan meaning "God is gracious." Romansh Gion preserves phonological features lost in neighboring Romance languages, making it a linguistic fossil of unusual purity.
In the canton's mountain villages, Gion has been a common name for centuries, carried by farmers, pastors, and craftspeople whose descendants spread across Switzerland and beyond. Simultaneously, Gion (祇園) is the name of Kyoto's most celebrated district, a preserved quarter of wooden machiya townhouses along the Shirakawa canal that has been the heart of geisha (geiko) culture since the Edo period (1603–1868). Named after the Gion Shrine (Yasaka Shrine) and derived from the Sanskrit "Jetavana" — the garden donated to the Buddha by the merchant Anathapindika — the district's name traveled from India to China to Japan across a thousand years of Buddhist transmission.
Gion Matsuri, held every July, is one of Japan's three great festivals, a month-long celebration with roots in the 9th century. As a given name today, Gion is used by Swiss families honoring their Romansh heritage, by Japanese families with Kyoto connections, and by parents internationally attracted to its quiet power — two syllables that somehow contain both Alpine austerity and Japanese aesthetic refinement.