Two unrelated names arrived at this spelling. One is a form of Eve, reaching back through Chawwa to the Hebrew ḥawa, ‘life.’ The other is Germanic and independent, a short form of older names beginning with the element awi- — and the honest position is that nobody knows what awi- meant. So Ava either means ‘life’ or means something unrecovered, depending on a lineage no modern parent is choosing between. What the Germanic line does have is a real person: Ava of Melk, an Austrian recluse who died in 1127 and is recognised as the first named woman to write in the German language. Her five surviving religious poems run to some three thousand lines. That is a serious literary pedigree, and it has nothing whatever to do with why the name became popular. Ava's meaning depends entirely on which of its two genuinely separate lineages applies: the Hebrew-rooted Eve-variant lane ('life') or the independent Germanic awi- lane, whose deeper meaning is itself unknown. These are not two interpretations of one origin but two unrelated names sharing a modern spelling.