What does Eliana mean?
Hebrew reading parses it as El 'God' + anah 'he has answered' + a first-person yod, 'my God has answered' (per Kolatch and Alcalay). A wholly separate Latin origin also exists (Aeliana, feminine of the gens name Aelius, ultimately linked to Greek helios 'sun'); the Hebrew sense is the one carried here.
What does Sadie mean?
A pet form of Sarah, from the Hebrew, “princess.”