Variant of Sheila, the Irish form of Cecilia, from Latin meaning 'blind' or 'heavenly.'
Shella is an elaborated variant of Sheila, which itself began as the Irish anglicization of Síle — the Gaelic rendering of the Latin name Caecilia, carried to Ireland through early Christian devotion to Saint Cecilia, the Roman martyr and patron saint of musicians. Caecilia derives from the ancient Roman family name Caecilius, which may connect to the Latin "caecus" (blind), though scholars have also proposed pre-Roman origins. Through this long journey from Roman Latin through medieval Irish, Sheila became thoroughly naturalized as an Irish name, so embedded in Irish identity that in Australian slang it became a generic informal term for a woman.
The spelling Shella adds a doubled consonant that gives the name a slightly different visual and sonic character — warmer, more emphatic, a little more American than its Irish cousin. This kind of spelling variation was common in the mid-20th century United States, where names were frequently respelled to create new family identity or simply to distinguish a child from others with similar names. Shella appears particularly in records from the American South, where creative name individualization was a strong cultural tradition.
The name carries the musical heritage of Saint Cecilia at its etymological core, even at several removes from the original — a quiet connection to artistic patronage and spiritual devotion. In contemporary usage Shella is genuinely rare, which gives it the charm of a name that feels personal and particular rather than fashionable. It has the direct friendliness of its era, a name that sounds like it belongs to someone warm and unpretentious, with deep roots in both Irish-Catholic tradition and American vernacular creativity.