Eva

Eva has (at least) three sources. One is as a form of the name Eve. Another other is as an English form of the Gaelic name Aoife, and another is an English form of the Irish name Éabha. Despite being a derived form of another name (in either case,) Eva has become quite popular as a name in its own right, and was particularly popular in the U.S. in the first 3 decades of the 1900's. Unlike many other names that were popular during that era, however, Eva has not become "old-fashioned" and is still in regular use. Eva is sometimes pronounced EE-vah, and sometimes pronounced AY-vah. Very occasionally Eva is pronounced EH-vah, but this is rare in English-speaking countries.