Clione is similar to the name Cleone, which was in use during the first half of the 20th century, but I doubt it’s a variant because Clione’s single-year appearance doesn’t match up with Cleone’s peak usage (from the mid-1910s to the mid-1920s).
One adorable thing that kept thwarting my search efforts was the genus Clione, which includes floating sea slugs or “sea angels”:
Not the source of the name, but makes a great image for this post. :)
Victory made the list the same year that WWI ended (well, the year that Germany and the Allies signed the armistice treaty). The treaty wasn’t signed until November 11th, though, so I wonder if most of the little girls named Victory were born right at the end of 1918.
(Liberty also made the list for the first time in 1918. Its second appearance was 1976, the year of the U.S. Bicentennial.)