Xerxes, the name, has been around since the first century, but it got a boost in popularity following the 300 movie, which featured Xerxes, the man, as a villain. Persian in origin, it’s the name of several Persian rulers. While still unusual, it’s a good choice to honor a Persian heritage. But be prepared for people to struggle with pronunciation and spelling.
Xerxes I of Persia, Xersex II of Persia, Xerxes of Armenia