Variant of Selma, possibly from Germanic 'helm' meaning helmet or protection, meaning divine protector.
Zelma is a name that arrives at its distinctive sound through several possible routes, all of them carrying echoes of protection and peace. It is most commonly understood as a variant of Selma, itself derived from either the Old Norse Anselm — built from "ans" (god) and "hjalmr" (helmet, protection) — or from the Arabic "salma" (peace, safety). The substitution of Z for S was a characteristic flourish of nineteenth-century English naming, when the letter Z lent an exotic, slightly aristocratic air to otherwise familiar forms.
The Scottish poet James Macpherson used the name Selma for a legendary castle in his enormously influential — and controversially fabricated — Ossian poems of the 1760s, which sparked a pan-European craze for invented Celtic antiquity. That romantic association filtered into naming culture on both sides of the Atlantic, giving Selma and its variants a faint aura of bardic legend through the nineteenth century. Zelma was particularly common in American naming between roughly 1880 and 1940, appearing often in Southern and Midwestern families.
Like many names from that era, it has the quality of feeling simultaneously old-fashioned and underused enough to sound fresh — a name a grandmother might have carried that no one in the current generation has yet claimed. Its strong opening consonant and clean two-syllable structure make it immediately pronounceable, and it belongs to the small family of Z-initial names — Zelda, Zena, Zola — that project quiet confidence.