From Greek 'delphis' meaning dolphin; also linked to the oracle at Delphi.
Delphine is a name of layered antiquity, drawing simultaneously from the ancient Greek city of Delphi — seat of the Oracle, navel of the world, home of the Pythia who spoke in riddles that shaped the destinies of kings — and from the Latin "delphinus," the dolphin, a creature sacred to Apollo and associated with intelligence, prophecy, and the bridging of worlds. Both etymological streams feed into the same pool: mystery, wisdom, and a quality of knowing that exists slightly outside ordinary time. In France, where the name has been most warmly embraced, Delphine has a distinguished cultural biography.
Saint Delphine of Provence, a fourteenth-century noblewoman renowned for her piety and her unconsummated mystical marriage to Saint Elzear, gave the name a hagiographic luster. The title "Dauphin" — the heir to the French throne — shares the same dolphin root, and the name carried aristocratic connotations throughout the ancien régime. In literature, Germaine de Staël's 1802 novel "Delphine" gave the name a Romantic-era heroine of passionate, rebellious intelligence, a woman who refuses the constraints her society places on her.
The novel scandalized Napoleon and became a touchstone of early feminist literature. Delphine migrated into English-speaking use gradually, never quite losing its French accent or its association with refinement and a certain oracular depth. It enjoyed quiet favor in mid-century America and has risen again in the twenty-first century as parents seek names with gravitas and continental elegance. To name a child Delphine is to invoke the dolphins, the oracle, the saint, and the revolutionary heroine in a single breath — a lot of history for one beautiful name to carry, and it bears it effortlessly.