I've checked what is perhaps the definitive reference dictionary of goddesses: *Goddesses in World Mythology: A Biographical Dictionary* by Martha Ann and Dorothy Myers Imel, and there is no mention of any goddess named "Condra" in there. I also tried alternate spellings of that name with no luck. Sorry.
Perhaps PriaposLovs may be familiar with that name, seeing as how you say it's supposed to be of Greek origin.
-- Nanaea