The exotic name Ziva first showed up in the U.S. baby name data during the 1960s:
1962: 9 baby girls named Ziva
1961: 8 baby girls named Ziva
1960: 6 baby girls named Ziva [debut]
What was the influence?
Israeli-born actress Ziva Rodann, who appeared in movies and on TV from the mid-1950s to the late 1960s.
Her movies included the The Story of Ruth* (1960) and The Private Lives of Adam and Eve (1960) with Mickey Rooney. In terms of television, she could be seen on episodes of shows like Bonanza, Have Gun – Will Travel, and Batman (on which she twice played the role of Nefertiti).
Her first name is a feminine form of the Hebrew name Ziv, which means “bright, radiant.”
The name dropped out of the data after that initial run, but returned in 2005 — the year the popular TV series NCIS introduced an Israeli character named Ziva David (played by Chilean actress Cote de Pablo†). Usage of the name increased quite a bit starting in 2009 — the year Ziva David was held captive in Somalia.
Please note that I did include names in the gray area between one syllable and two syllables. The deciding factor on these particular names (such as Charles, Miles, and Noel) will be your own interpretation/accent, so be sure to test the names out loud before making any final decisions.