Eira Barbara is a relatively uncommon name, so finding synonyms for it may prove to be tricky. However, Eira is a Welsh name that means "snow," so synonyms for that could include "Blizzard," "Flurry," or "Frost." Barbara is a Greek name that means "foreign," so synonyms for that could include "Exotic," "Alien," or "Non-native." These synonyms may not necessarily convey the same meaning as Eira Barbara, but they could be used as alternate names for someone who goes by that name or as inspiration for coming up with a new name.