Sia may have evolved from Sian, but Sia is not a formal English name, which means "a precious gift from God". Xi 'an is from Wales.

There is a female singer named Sia in Australia.

English name means English name in English. Nowadays, English names are popular in all countries, because there are many exchanges among countries in the world, and it is more convenient to communicate with each other with English names. The general structure of English names is: Christian names follow surnames. Like william jefferson clinton. But on many occasions, middle names are often omitted, such as George Bush, and many people prefer to use nicknames rather than formal Christian names, such as Bill Clinton. The above Christian names and middle names are also called human names.